| Country | Judicial branch |
| 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) |
| Ghana | Supreme Court |
| Gibraltar | Supreme Court; Court of Appeal |
| Greece | Supreme Judicial Court; Special Supreme Tribunal; all judges are appointed for life by the president after consultation with a judicial council |
| Greenland | High Court or 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); 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 for concurrent five-year terms); Supreme Court of Justice or Corte Suprema de Justicia (13 members 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 | Court of First Instance or Tribunal de Premiere Instance; Court of Appeal or Cour d'Appel; Supreme Court or Cour Supreme |
| Guinea-Bissau | Supreme Court or Supremo Tribunal da Justica (consists of nine justices appointed by the president and serve at his pleasure; final court of appeals in criminal and civil cases); Regional Courts (one in each of nine regions; first court of appeals for Sectoral Court decisions; hear all felony cases and civil cases valued at more than $1,000); 24 Sectoral Courts (judges are not necessarily trained lawyers; they hear civil cases valued at less than $1,000 and misdemeanor criminal cases) |
| Guyana | Supreme Court of Judicature, consisting of the High Court and the Court of Appeal, with right of final appeal to the Caribbean Court of Justice (CCJ) |