| Country | Judicial branch |
| French Southern and Antarctic Lands | void |
| Gabon | Supreme Court or Cour Supreme consisting of three chambers - Judicial, Administrative, and Accounts; Constitutional Court; Courts of Appeal; Court of State Security; County Courts |
| Gambia, The | Supreme Court |
| Gaza Strip | void |
| Georgia | Supreme Court (judges elected by the Supreme Council on the president's or chairman of the Supreme Court's recommendation); Constitutional Court; first and second instance courts |
| Germany | Federal Constitutional Court or Bundesverfassungsgericht (half the judges are elected by the Bundestag and half by the Bundesrat); Federal Court of Justice; Federal Administrative Court |
| Ghana | Supreme Court; High Court; Court of Appeal; regional tribunals |
| Gibraltar | Supreme Court; Court of Appeal |
| Greece | Supreme Civil and Criminal Court; all judges are appointed for life by the president after consultation with a judicial council; Supreme Administrative Court and Court of Auditors; Courts of Appeal; Courts of First Instance |
| Greenland | High Court or Eggartuussisuuneqarfia (Landsret) (appeals can be made to the Ostre Landsret or Eastern Division of the High Court or Supreme Court in Copenhagen) |
| Grenada | Eastern Caribbean Supreme Court, consisting of a court of Appeal and a High Court of Justice (two High Court judges are assigned to and reside in Grenada); Itinerant Court of Appeal three judges; member of the Caribbean Court of Justice (CCJ) |
| Guam | Federal District Court (judge is appointed by the president); Supreme Court of Guam (hears appeals from Superior Court - judges appointed by governor); Territorial Superior Court (judges appointed for eight-year terms by the governor) |
| Guatemala | Constitutional Court or Corte de Constitucionalidad is Guatemala's highest court (five judges are elected by Congress for concurrent five-year terms); Supreme Court of Justice or Corte Suprema de Justicia (13 members are elected by Congress to serve concurrent five-year terms and elect a president of the Court each year from among their number; the president of the Supreme Court of Justice also supervises trial judges around the country, who are named to five-year terms) |
| Guernsey | Royal Court (judges elected by an electoral college and the bailiff) |
| Guinea | Constitutional Court; Court of First Instance or Tribunal de Premiere Instance; Court of Appeal or Cour d'Appel; Supreme Court or Cour Supreme |