| Country | Legal system |
| Fiji | common law system based on the English model |
| Finland | civil law system based on the Swedish model; note - the president may request the Supreme Court to review laws |
| 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 |
| Gaza Strip | void |
| 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, where applicable, apply |
| 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, and 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 (influenced by the early French Civil Code) 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 |