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This entry provides descriptions of countries' legal systems, which are modeled on elements of five main types: civil law (including French law, the Napoleonic Code, Roman law, Roman-Dutch law, and Spanish law); common law (including United States law); customary law; mixed or pluralistic law; and religious law (including Islamic law). An additional type of legal system -- international law, which governs nations' interactions -- is also addressed below. 

Civil Law - the most widespread type of legal system in the world, applied in various forms in approximately 150 countries. Also referred to as European continental law, it is derived mainly from the Roman Corpus Juris Civilus (Body of Civil Law), a collection of laws and legal interpretations compiled under the East Roman (Byzantine) Emperor Justinian I between A.D. 528 and 565. The major feature of civil law systems is that the laws are organized into systematic written codes. The sources recognized as authoritative are principally legislation -- especially codifications in constitutions or government statutes -- and secondarily custom. 
Common Law - often called "English common law," England and Wales use the system in the UK, and it is also in force in approximately 80 countries with ties to the former British Empire. English common law reflects Biblical influences as well as remnants of legal systems imposed by early conquerors, including the Romans, Anglo-Saxons, and Normans. Some legal scholars attribute the system to King Henry II (r.1154-1189), who established the king's court to replace locally administered laws and made laws "common" to the entire English realm. The foundation of the system is "legal precedent," often referred to as stare decisis ("to stand by things decided"), in which judges must follow the precedent set by earlier court decisions.
Customary Law - as the name implies, this system is based on the customs of a community. It serves as the basis of or has influenced the laws in approximately 40 countries -- mostly in Africa, but some in the Pacific Islands, Europe, and the Near East. Customary law is also referred to as "primitive law," "unwritten law," "indigenous law," and "folk law." The earliest legal systems were customary and usually developed in small agrarian and hunter-gatherer communities. Customary legal systems are seldom written down, regulate social relations, and are agreed upon by community members. If a law is broken, resolution tends to be reconciliatory rather than punitive. 
European Union (EU) Law - a variant of international law unique to a subset of European countries. Also known as Community Law or supranational law, the rights of sovereign European nations are limited in relation to one another, with EU law operating in tandem with the 27 member states' legal systems. The European Court of Justice (ECJ), established in 1952 by the Treaty of Paris, has been largely responsible for the development of EU law. Fundamental principles include: subsidiarity - issues are handled by the smallest, lowest, or least centralized competent authority; proportionality - the EU may only act to the extent needed to achieve its objectives; conferral - the EU is a union of member states, and members grant all its authorities; legal certainty - requires that rules be clear and precise; and precautionary principle - if an action or policy might cause severe or irreversible harm to the public or the environment, in the absence of a scientific consensus that harm would not ensue, the burden of proof falls on those who advocate the action.
French Law - a type of codified civil law that is used in France and serves as the basis for or is mixed with other legal systems in approximately 50 countries in North Africa, the Near East, and French territories and dependencies. Prior to the French Revolution (1789-1799), laws in the northern areas of present-day France were mostly local customs based on privileges and exemptions granted by kings and feudal lords, while in the southern areas Roman law predominated. Napoleon Bonaparte introduced what is now called the Napoleonic Code or the Civil Code in the early 1800s; many of these major reforms remain, with extensive amendments, part of France's current legal structure. French law distinguishes between "public law," which relates to government, the French Constitution, public administration, and criminal law, and "private law," which covers issues between private citizens or corporations. 
International Law - the body of customary and treaty rules accepted as legally binding by states in their relations with each other. There are three separate disciplines: public international law, which governs the relationship between provinces and international entities and includes treaty law, law of the sea, international criminal law, and international humanitarian law; private international law, which addresses legal jurisdiction; and supranational law, a legal framework of regional agreements. At present, the European Union is the only entity under a supranational legal system. Modern international law developed as European nation-states emerged beginning in the early 16th century. The sources are set out in Article 38-1 of the Statute of the International Court of Justice in the UN Charter.
Islamic Law - the most widespread type of religious law, it is the legal system in over 30 countries, particularly in the Near East but also in Central and South Asia, Africa, and Indonesia. In many countries, Islamic law operates in tandem with a civil law system and is embodied in the sharia, an Arabic word meaning "the right path." Sharia covers all aspects of public and private life and organizes them into five categories: obligatory, recommended, permitted, disliked, and forbidden. The primary sources of sharia law are the Qur'an and the Sunnah. Traditional Sunni Muslims also recognize the consensus of Muhammad's companions and Islamic jurists on certain issues, called ijmas, and various forms of reasoning, including analogy by legal scholars, referred to as qiyas. Shia Muslims reject ijmas and qiyas as sources of sharia law.
Mixed Law - also referred to as pluralistic law, mixed law consists of elements of some or all of the other main types of legal systems. The mixed systems of a number of countries came about when colonial powers overlaid their own legal systems on colonized regions but retained elements of the colonies' existing systems.
Napoleonic Civil Code - a type of civil law, referred to as the Civil Code or Code Civil des Français, that forms part of the French legal system and underpins the legal systems of Bolivia, Egypt, Lebanon, Poland, and the US state of Louisiana. The Civil Code was established under Napoleon Bonaparte, enacted in 1804, and officially designated the Code Napoleon in 1807. This legal system combined the Teutonic civil law tradition of France's northern provinces with the Roman law tradition of the southern and eastern regions. The Civil Code has similarities with the Roman Body of Civil Law (see Civil Law above). As enacted in 1804, the Code addressed personal status, property, and the acquisition of property, with later additions including civil procedures, commercial law, criminal law and procedures, and a penal code.
Religious Law - a legal system that stems from the sacred text of a religious tradition and in most cases professes to cover all aspects of life as part of devotional obligations. Inalterability is implied, because the word of God cannot be amended or legislated, but human elaboration allows for a detailed legal system. The main types of religious law are sharia in Islam, halakha in Judaism, and canon law in some Christian groups. Sharia is the most widespread (see Islamic Law) and is the sole system for some countries, including Iran, the Maldives, and Saudi Arabia. No country is fully governed by halakha, but Jewish people may decide to settle disputes through Jewish courts. Canon law is not considered a divine law because it is viewed as human law inspired by God. Canon law regulates the internal ordering of the Roman Catholic Church, the Eastern Orthodox Church, and the Anglican Communion.
Roman Law - a type of civil law developed in ancient Rome and practiced from the time of the city's founding (traditionally 753 B.C.) until the fall of the Western Empire in the 5th century A.D. Roman law remained the legal system of the Byzantine (Eastern Empire) until the fall of Constantinople in 1453. Preserved fragments of the first legal text, known as the Law of the Twelve Tables, date from the 5th century B.C. and contain specific provisions designed to change prevailing customary law. Later, emperors asserted their authority as the ultimate source of law. The basis for Roman law was the idea that the exact form -- not the intention -- of words or of actions produced legal consequences. A comprehensive code was published in the late sixth century A.D. (see Civil Law). Roman law served as the basis for legal systems developed in a number of continental European countries.
Roman-Dutch Law - a type of civil law based on Roman law as applied in the Netherlands. Roman-Dutch law is the foundation for legal systems in seven African countries, as well as Guyana, Indonesia, and Sri Lanka. It originated in the province of Holland and expanded throughout the Netherlands and was instituted in a number of sub-Saharan African countries during the Dutch colonial period. The Dutch jurist/philosopher Hugo Grotius was the first to attempt to reduce Roman-Dutch civil law into a system in his Jurisprudence of Holland (1620-21), and the Dutch historian/lawyer Simon van Leeuwen coined the term "Roman-Dutch law" in 1652. It replaced by the French Civil Code in 1809.
Spanish Law - a type of civil law that is often referred to as the Spanish Civil Code. It is the present legal system of Spain and the basis of legal systems in 12 countries, mostly in Central and South America. The Spanish Civil Code reflects a complex mixture of customary, Roman, Napoleonic, local, and modern codified law. The Visigoth invaders in the 5th to 7th centuries were the earliest major influence, and the Christian Reconquest of Spain in the 11th through 15th centuries saw the development of customary law, which combined canon (religious) and Roman law. During several centuries of Hapsburg and Bourbon rule, systematic recompilations of the existing national legal system were attempted, but these often conflicted with local and regional customary civil laws. A national civil law system was finally enacted in 1889 as the Spanish Civil Code, which separates public and private law. Public law includes constitutional law, administrative law, criminal law, process law, financial and tax law, and international public law. Private law includes civil law, commercial law, labor law, and international private law.
United States Law - a type of common law and the basis of the US legal system. This system has several layers, which is due in part to the division between federal and state law. The United States was originally founded as a union of 13 colonies that later became the first states. The US Constitution, implemented in 1789, began shifting power away from the states and toward the federal government, though the states today retain substantial legal authority. US law draws from four sources: constitutional law, statutory law, administrative regulations, and case law. Constitutional law is based on the US Constitution and serves as the supreme federal law, with state constitutions governing state law. US statutory law is legislation enacted by the US Congress and is codified in the United States Code. The 50 state legislatures have similar authority to enact state statutes. Administrative law is the authority delegated to federal and state executive agencies. Case law, also referred to as common law, covers areas where constitutional or statutory law is lacking. Case law is a collection of judicial decisions, customs, and general principles that began in England centuries ago, that were adopted in America at the time of the Revolution, and that continue to develop today.

Afghanistan

the Taliban is implementing its own interpretation of Islamic law, which is partially based on the Hanifi school of Islamic jurisprudence and have enforced strict punishments; before the Taliban takeover, Afghanistan had a mixed legal system of civil, customary, and Islamic law

(2021)

Akrotiri and Dhekelia

Laws applicable to the Cypriot population are, as far as possible, the same as the laws of the Republic of Cyprus (ROC); however, the SBA Administration has its own court system to deal with civil and criminal matters, its own police force responsible for civil law enforcement, and a Cyprus Joint Police Unit responsible for military law enforcement; SBA Police coordinate closely with ROC police and UN Peacekeeping Forces in Cyprus (UNFICYP); the SBA Police force is composed almost entirely of Greek Cypriots in ROC regions of the SBAs, and Turkish Cypriot officers in the small portion of Dhekelia administered by the Turkish Cypriots

Albania

civil law system except in the northern rural areas where customary law known as the "Code of Leke" is still present

Algeria

mixed legal system of French civil law and Islamic law; judicial review of legislative acts in ad hoc Constitutional Council composed of various public officials including several Supreme Court justices

American Samoa

mixed legal system of US common law and customary law

Andorra

mixed legal system of civil and customary law with the influence of canon (religious) law

Angola

civil legal system based on Portuguese civil law; no judicial review of legislation

Anguilla

common law based on the English model

Antarctica

Antarctica is administered through annual meetings - known as Antarctic Treaty Consultative Meetings - which include consultative member nations, non-consultative member nations, observer organizations, and expert organizations; decisions from these meetings are carried out by these member nations (with respect to their own nationals and operations) in accordance with their own national laws; more generally, the Antarctic Treaty area and all areas south of 60 degrees south latitude, including all ice shelves and islands, are subject to a number of relevant legal instruments and procedures adopted by the states party to the Antarctic Treaty; note - US law, including certain criminal offenses by or against US nationals, such as murder, may apply extraterritoriality; some US laws directly apply to Antarctica; for example, the Antarctic Conservation Act, 16 U.S.C. section 2401 et seq., provides civil and criminal penalties for the following activities unless authorized by regulation or statute: the taking of native mammals or birds; the introduction of nonindigenous plants and animals; entry into specially protected areas; the discharge or disposal of pollutants; and the importation into the US of certain items from Antarctica; violation of the Antarctic Conservation Act carries penalties of up to $10,000 in fines and one year in prison; the National Science Foundation and Department of Justice share enforcement responsibilities; Public Law 95-541, the US Antarctic Conservation Act of 1978, as amended in 1996, requires expeditions from the US to Antarctica to notify, in advance, the Office of Ocean and Polar Affairs, Room 2665, Department of State, Washington, DC 20520, which reports such plans to other nations as required by the Antarctic Treaty; for more information, contact [email protected]

Antigua and Barbuda

common law based on the English model

Argentina

civil law system based on West European legal systems; note - in mid-2015, Argentina adopted a new civil code, replacing the old one in force since 1871

Armenia

civil law system

Aruba

civil law system based on the Dutch civil code

Ashmore and Cartier Islands

the laws of the Commonwealth of Australia and the laws of the Northern Territory of Australia, where applicable, apply

Australia

common law system based on the English model

Austria

civil law system; judicial review of legislative acts by the Constitutional Court

Azerbaijan

civil law system

Bahamas, The

common law system based on the English model

Bahrain

mixed legal system of Islamic (sharia) law, English common law, Egyptian civil, criminal, and commercial codes; customary law

Bangladesh

common law; since independence, statutory law enacted by the Parliament of Bangladesh has been the primary form of legislation; Bangladeshi law incorporates elements of English common law; Islamic law applies to Bangladeshi Muslims in family and inheritance laws, with Hindu personal law applying to Bangladeshi Hindus and Buddhists  

Barbados

English common law; no judicial review of legislative acts

Belarus

civil law system; note - nearly all major codes (civil, civil procedure, criminal, criminal procedure, family, and labor) were revised and came into force in 1999 and 2000

Belgium

civil law system based on the French Civil Code; note - Belgian law continues to be modified in conformance with the legislative norms mandated by the European Union; judicial review of legislative acts

Belize

English common law

Benin

civil law system modeled largely on the French system and some customary law

Bermuda

English common law

Bhutan

civil law based on Buddhist religious law

Bolivia

civil law system with influences from Roman, Spanish, canon (religious), French, and indigenous law

Bosnia and Herzegovina

civil law system; Constitutional Court review of legislative acts

Botswana

mixed legal system of civil law influenced by the Roman-Dutch model and also customary and common law

Bouvet Island

the laws of Norway apply where applicable

Brazil

civil law; note - a new civil law code was enacted in 2002 replacing the 1916 code

British Indian Ocean Territory

the laws of the UK apply where applicable

British Virgin Islands

English common law

Brunei

mixed legal system based on English common law and Islamic law; note - in April 2019, the full sharia penal codes came into force and apply to Muslims and partly to non-Muslims in parallel with present common law codes

Bulgaria

civil law

Burkina Faso

civil law based on the French model and customary law; in mid-2019, the National Assembly amended the penal code

Burma

mixed legal system of English common law (as introduced in codifications designed for colonial India) and customary law

Burundi

mixed legal system of Belgian civil law and customary law

Cabo Verde

civil law system of Portugal

Cambodia

civil law system (influenced by the UN Transitional Authority in Cambodia) customary law, Communist legal theory, and common law

Cameroon

mixed legal system of English common law, French civil law, and customary law

Canada

common law system except in Quebec, where civil law based on the French civil code prevails

Cayman Islands

English common law and local statutes

Central African Republic

civil law system based on the French model

Chad

mixed legal system of civil and customary law

Chile

civil law system influenced by several West European civil legal systems; judicial review of legislative acts by the Constitutional Tribunal

China

civil law influenced by Soviet and continental European civil law systems; legislature retains power to interpret statutes; note - on 28 May 2020, the National People's Congress adopted the PRC Civil Code, which codifies personal relations and property relations

Christmas Island

legal system is under the authority of the governor general of Australia and Australian law

Clipperton Island

the laws of France apply

Cocos (Keeling) Islands

common law based on the Australian model

Colombia

civil law system influenced by the Spanish and French civil codes

Comoros

mixed legal system of Islamic religious law, the French civil code of 1975, and customary law

Congo, Democratic Republic of the

civil law system primarily based on Belgian law, but also customary and tribal law

Congo, Republic of the

mixed legal system of French civil law and customary law

Cook Islands

common law similar to New Zealand common law

Coral Sea Islands

the common law legal system of Australia applies where applicable

Costa Rica

civil law system based on Spanish civil code; judicial review of legislative acts in the Supreme Court

Cote d'Ivoire

civil law system based on the French civil code; judicial review of legislation held in the Constitutional Chamber of the Supreme Court

Croatia

civil law system influenced by legal heritage of Austria-Hungary; note - Croatian law was fully harmonized with the European Community acquis as of the June 2010 completion of EU accession negotiations

Cuba

civil law system based on Spanish civil code

Curacao

based on Dutch civil law

Cyprus

mixed legal system of English common law and civil law with European law supremacy

Czechia

new civil code enacted in 2014, replacing civil code of 1964 - based on former Austro-Hungarian civil codes and socialist theory - and reintroducing former Czech legal terminology

Denmark

civil law; judicial review of legislative acts

Djibouti

mixed legal system based primarily on the French civil code (as it existed in 1997), Islamic religious law (in matters of family law and successions), and customary law

Dominica

common law based on the English model

Dominican Republic

civil law system based on the French civil code; Criminal Procedures Code modified in 2004 to include important elements of an accusatory system

Ecuador

civil law based on the Chilean civil code with modifications; traditional law in indigenous communities

Egypt

mixed legal system based on Napoleonic civil and penal law, Islamic religious law, and vestiges of colonial-era laws; judicial review of the constitutionality of laws by the Supreme Constitutional Court

El Salvador

civil law system with minor common law influence; judicial review of legislative acts in the Supreme Court

Equatorial Guinea

mixed system of civil and customary law

Eritrea

mixed legal system of civil, customary, and Islamic religious law

Estonia

civil law system

Eswatini

mixed legal system of civil, common, and customary law

Ethiopia

civil law system

European Union

unique supranational system of laws in which, according to an interpretive declaration of member-state governments appended to the Treaty of Lisbon, "the Treaties and the law adopted by the Union on the basis of the Treaties have primacy over the law of Member States" under conditions laid down in the case law of the Court of Justice; key principles of EU jurisprudence include universal rights as guaranteed by the Charter of Fundamental Rights and as resulting from constitutional traditions common to the EU's 27 member states; EU law is divided into 'primary' and 'secondary' legislation; primary legislation is derived from the consolidated versions of the Treaty on European Union and the Treaty on the Functioning of the European Union and are the basis for all EU action; secondary legislation - which includes directives, regulations, and decisions - is derived from the principles and objectives set out in the treaties

Falkland Islands (Islas Malvinas)

English common law and local statutes

Faroe Islands

the laws of Denmark apply where applicable

Fiji

common law system based on the English model

Finland

civil law system based on the Swedish model

France

civil law; review of administrative but not legislative acts

French Polynesia

the laws of France, where applicable, apply

French Southern and Antarctic Lands

the laws of France, where applicable, apply

Gabon

mixed legal system of French civil law and customary law

Gambia, The

mixed legal system of English common law, Islamic law, and customary law

Georgia

civil law system

Germany

civil law system

Ghana

mixed system of English common law and customary law

Gibraltar

the laws of the UK, where applicable, apply

Greece

civil legal system based on Roman law

Greenland

the laws of Denmark apply where applicable and Greenlandic law applies to other areas

Grenada

common law based on English model

Guam

common law modeled on US system; US federal laws apply

Guatemala

civil law system; judicial review of legislative acts

Guernsey

customary legal system based on Norman customary law; includes elements of the French civil code and English common law

Guinea

civil law system based on the French model

Guinea-Bissau

mixed legal system of civil law, which incorporated Portuguese law at independence and influenced by Economic Community of West African States (ECOWAS), West African Economic and Monetary Union (UEMOA), African Francophone Public Law, and customary law

Guyana

common law system, based on the English model, with some Roman-Dutch civil law influence

Haiti

civil law system strongly influenced by Napoleonic Code

Heard Island and McDonald Islands

the laws of Australia apply where applicable

Holy See (Vatican City)

religious legal system based on canon (religious) law

Honduras

civil law system

Hong Kong

mixed legal system of common law based on the English model and Chinese customary law (in matters of family and land tenure); PRC imposition of National Security Law incorporates elements of Chinese civil law

Hungary

civil legal system influenced by the German model

Iceland

civil law system influenced by the Danish model

India

common law system based on the English model; separate personal law codes apply to Muslims, Christians, and Hindus; judicial review of legislative acts

Indonesia

civil law system based on the Roman-Dutch model and influenced by customary law

Iran

religious legal system based on secular and Islamic law

Iraq

mixed legal system of civil and Islamic law

Ireland

common law system based on the English model but substantially modified by customary law; judicial review of legislative acts by Supreme Court

Isle of Man

the laws of the UK apply where applicable and include Manx statutes

Israel

mixed legal system of English common law, British Mandate regulations, and Jewish, Christian, and Muslim religious laws

Italy

civil law system; judicial review of legislation under certain conditions in Constitutional Court

Jamaica

common law system based on the English model

Jan Mayen

the laws of Norway apply where applicable 

Japan

civil law system based on German model; system also reflects Anglo-American influence and Japanese traditions; judicial review of legislative acts in the Supreme Court

Jersey

the laws of the UK apply where applicable; includes local statutes

Jordan

mixed system developed from codes instituted by the Ottoman Empire (based on French law), British common law, and Islamic law

Kazakhstan

civil law system influenced by Roman-Germanic law and by the theory and practice of the Russian Federation

Kenya

mixed legal system of English common law, Islamic law, and customary law; judicial review in the new Supreme Court established by the new constitution

Kiribati

English common law supplemented by customary law

Korea, North

civil law system based on the Prussian model; system influenced by Japanese traditions and Communist legal theory

Korea, South

mixed legal system combining European civil law, Anglo-American law, and Chinese classical thought

Kosovo

civil law system; note - the European Union Rule of Law Mission (EULEX) retained limited executive powers within the Kosovo judiciary for complex cases from 2008 to 2018

Kuwait

mixed legal system consisting of English common law, French civil law, and Islamic sharia law

Kyrgyzstan

civil law system, which includes features of French civil law and Russian Federation laws

Laos

civil law system similar in form to the French system

Latvia

civil law system with traces of socialist legal traditions and practices

Lebanon

mixed legal system of civil law based on the French civil code, Ottoman legal tradition, and religious laws covering personal status, marriage, divorce, and other family relations of the Jewish, Islamic, and Christian communities

Lesotho

mixed legal system of English common law and Roman-Dutch law; judicial review of legislative acts in High Court and Court of Appeal

Liberia

mixed legal system of common law, based on Anglo-American law, and customary law

Libya

Libya's post-revolution legal system is in flux and driven by state and non-state entities

Liechtenstein

civil law system influenced by Swiss, Austrian, and German law

Lithuania

civil law system; legislative acts can be appealed to the Constitutional Court

Luxembourg

civil law system

Macau

civil law system based on the Portuguese model

Madagascar

civil law system based on the old French civil code and customary law in matters of marriage, family, and obligation

Malawi

mixed legal system of English common law and customary law; judicial review of legislative acts in the Supreme Court of Appeal

Malaysia

mixed legal system of English common law, Islamic law (sharia), and customary law; judicial review of legislative acts in the Federal Court at request of supreme head of the federation

Maldives

Islamic (sharia) legal system with English common law influences, primarily in commercial matters

Mali

civil law system based on the French civil law model and influenced by customary law; judicial review of legislative acts in the Constitutional Court

Malta

mixed legal system of English common law and civil law based on the Roman and Napoleonic civil codes; subject to European Union law

Marshall Islands

mixed legal system of US and English common law, customary law, and local statutes

Mauritania

mixed legal system of Islamic and French civil law

Mauritius

civil legal system based on French civil law with some elements of English common law

Mexico

civil law system with US constitutional law influence; judicial review of legislative acts

Micronesia, Federated States of

mixed legal system of common and customary law

Moldova

civil law system with Germanic law influences; Constitutional Court review of legislative acts

Monaco

civil law system influenced by French legal tradition

Mongolia

civil law system influenced by Soviet and Romano-Germanic legal systems; constitution ambiguous on judicial review of legislative acts

Montenegro

civil law

Montserrat

English common law

Morocco

mixed legal system of civil law based on French civil law and Islamic (sharia) law; judicial review of legislative acts by Constitutional Court

Mozambique

mixed legal system of Portuguese civil law and customary law

Namibia

mixed legal system of uncodified civil law based on Roman-Dutch law and customary law

Nauru

mixed legal system of common law based on the English model and customary law

Navassa Island

the laws of the US apply where applicable

Nepal

English common law and Hindu legal concepts; note - new criminal and civil codes came into effect on 17 August 2018

Netherlands

civil law system based on the French system; constitution does not permit judicial review of acts of the States General

New Caledonia

civil law system based on French civil law

New Zealand

common law system, based on English model, with special legislation and land courts for the Maori

Nicaragua

civil law system; Supreme Court may review administrative acts

Niger

note - following the 26 July 2023 military coup, the National Council for the Safeguard of the Homeland assumed control of all government institutions and rules by decree; formerly, mixed legal system of civil law, based on French civil law, Islamic law, and customary law

Nigeria

mixed legal system of English common law, Islamic law (in 12 northern states), and traditional law

Niue

English common law

Norfolk Island

English common law and the laws of Australia

North Macedonia

civil law system; judicial review of legislative acts

Northern Mariana Islands

the laws of the US apply, except for customs and some aspects of taxation

Norway

mixed legal system of civil, common, and customary law; Supreme Court can advise on legislative acts

Oman

mixed legal system of Anglo-Saxon law and Islamic law

Pakistan

common law system with Islamic law influence

Palau

mixed legal system of civil, common, and customary law

Panama

civil law system; judicial review of legislative acts in the Supreme Court of Justice

Papua New Guinea

mixed legal system of English common law and customary law

Paraguay

civil law system with influences from Argentine, Spanish, Roman, and French civil law models; judicial review of legislative acts in Supreme Court of Justice

Peru

civil law system

Philippines

mixed legal system of civil, common, Islamic (sharia), and customary law

Pitcairn Islands

local island by-laws

Poland

civil law system; judicial review of legislative, administrative, and other governmental acts; constitutional law rulings of the Constitutional Tribunal are final

Portugal

civil law system; Constitutional Court review of legislative acts

Puerto Rico

civil law system based on the Spanish civil code and within the framework of the US federal system

Qatar

mixed legal system of civil law and Islamic (sharia) law (in family and personal matters)

Romania

civil law system

Russia

civil law system; judicial review of legislative acts

Rwanda

mixed legal system of civil law, based on German and Belgian models, and customary law; judicial review of legislative acts in the Supreme Court

Saint Barthelemy

French civil law

Saint Helena, Ascension, and Tristan da Cunha

English common law and local statutes

Saint Kitts and Nevis

English common law

Saint Lucia

English common law

Saint Martin

French civil law

Samoa

mixed legal system of English common law and customary law; judicial review of legislative acts with respect to fundamental rights of the citizen

San Marino

civil law system with Italian civil law influences

Sao Tome and Principe

mixed legal system of civil law based on the Portuguese model and customary law

Saudi Arabia

Islamic (sharia) legal system with some elements of Egyptian, French, and customary law; note - several secular codes have been introduced; commercial disputes handled by special committees

Senegal

civil law system based on French law; judicial review of legislative acts in Constitutional Council

Serbia

civil law system

Seychelles

mixed legal system of English common law, French civil law, and customary law

Sierra Leone

mixed legal system of English common law and customary law

Singapore

English common law

Sint Maarten

based on Dutch civil law system with some English common law influence

Slovakia

civil law system based on Austro-Hungarian codes; note - legal code modified to comply with the obligations of Organization on Security and Cooperation in Europe

Slovenia

civil law system

Solomon Islands

mixed legal system of English common law and customary law

Somalia

mixed legal system of civil law, Islamic (sharia) law, and customary law (referred to as Xeer)

South Africa

mixed legal system of Roman-Dutch civil law, English common law, and customary law

South Georgia and South Sandwich Islands

the laws of the UK, where applicable, apply

Spain

civil law system with regional variations

Sri Lanka

mixed legal system of Roman-Dutch civil law, English common law, Jaffna Tamil customary law, and Muslim personal law

Sudan

mixed legal system of Islamic law and English common law; note - in mid-July 2020, Sudan amended 15 provisions of its 1991 penal code

Suriname

civil law system influenced by Dutch civil law; note - a new criminal code was enacted in 2017

Svalbard

only the laws of Norway made explicitly applicable to Svalbard have effect there; the Svalbard Act and the Svalbard Environmental Protection Act, and certain regulations, apply only to Svalbard; the Spitsbergen Treaty and the Svalbard Treaty grant certain rights to citizens and corporations of signatory nations; as of June 2017, 45 nations had ratified the Svalbard Treaty

Sweden

civil law system influenced by Roman-Germanic law and customary law

Switzerland

civil law system; judicial review of legislative acts, except for federal decrees of a general obligatory character

Syria

mixed legal system of civil and Islamic (sharia) law (for family courts)

Taiwan

civil law system

Tajikistan

civil law system

Tanzania

English common law; judicial review of legislative acts limited to matters of interpretation

Thailand

civil law system with common law influences

Timor-Leste

civil law system based on the Portuguese model; note - penal and civil law codes to replace the Indonesian codes were passed by Parliament and promulgated in 2009 and 2011, respectively

Togo

customary law system

Tokelau

common law system of New Zealand

Tonga

English common law

Trinidad and Tobago

English common law; judicial review of legislative acts in the Supreme Court

Tunisia

mixed legal system of civil law, based on the French civil code and Islamic (sharia) law; some judicial review of legislative acts in the Supreme Court in joint session

Turkey (Turkiye)

civil law system based on various European legal systems, notably the Swiss civil code

Turkmenistan

civil law system with Islamic (sharia) law influences

Turks and Caicos Islands

mixed legal system of English common law and civil law

Tuvalu

mixed legal system of English common law and local customary law

Uganda

mixed legal system of English common law and customary law

Ukraine

civil law system; judicial review of legislative acts

United Arab Emirates

mixed legal system of Islamic (sharia) law and civil law

United Kingdom

common law system; has nonbinding judicial review of Acts of Parliament under the Human Rights Act of 1998

United States

common law system based on English common law at the federal level; state legal systems based on common law, except Louisiana, where state law is based on Napoleonic civil code; judicial review of legislative acts

United States Pacific Island Wildlife Refuges

the laws of the US apply where applicable

Uruguay

civil law system based on the Spanish civil code

Uzbekistan

civil law system; note: in early 2020, the president signed an amendment to the criminal code, criminal procedure code, and code of administrative responsibility; a constitutional referendum passed in April 2023 included criminal code reforms  

Vanuatu

mixed legal system of English common law, French law, and customary law

Venezuela

civil law system based on the Spanish civil code

Vietnam

civil law system; note - the civil code of 2005 reflects a European-style civil law

Virgin Islands

US common law

Wake Island

US common law

Wallis and Futuna

French civil law

World

the legal systems of nearly all countries are modeled on elements of five main types: civil law (including French law, the Napoleonic Code, Roman law, Roman-Dutch law, and Spanish law), common law (including English and US law), customary law, mixed or pluralistic law, and religious law (including Islamic sharia law); an additional type of legal system -- international law -- governs the conduct of independent nations in their relationships with one another

Yemen

mixed legal system of Islamic (sharia) law, Napoleonic law, English common law, and customary law

Zambia

mixed legal system of English common law and customary law

Zimbabwe

mixed legal system of English common law, Roman-Dutch civil law, and customary law