| Country | Legal system |
| Afghanistan | mixed legal system of civil, customary, and Islamic law |
| Akrotiri | the Sovereign Base Area Administration has its own court system to deal with civil and criminal matters; laws applicable to the Cypriot population are, as far as possible, the same as the laws of the Republic of Cyprus |
| Albania | civil law system except in the northern rural areas where customary law known as the "Code of Leke" prevails |
| 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 canon (religious) law influences |
| Angola | civil legal system based on Portuguese civil law; no judicial review of legislative acts |
| Anguilla | common law based on the English model |