GJ or Gj may refer to:
Gjirokastër (Albanian pronunciation: [ɟiɾokastəɾ]) is a city in southern Albania, on a valley between the Gjerë mountains and the Drino, at 300 metres above sea level.
Gjakova (Albanian: Gjakovë) or Đakovica (Serbian Cyrillic: Ђаковица; sometimes transliterated as Djakovica) is a city and municipality located in the Gjakova District of western Kosovo.
Gjilan (Albanian: Gjilani, IPA: [ɟilani] (listen)) or Gnjilane (Serbian Cyrillic: Гњилане), is a city and municipality located in the Gjilan District in eastern Kosovo.
Gjon Kastrioti (13?? – 4 May 1437), was an Albanian nobleman, member of the Kastrioti family, and the father of Skanderbeg.
Gjergji Muzaka (born 26 September 1984) is an Albanian professional footballer who plays as a midfielder for Albanian club Skënderbeu Korçë.
Gjorge Ivanov (Macedonian: Ѓорге Иванов, pronounced [ˈɟɔrɡɛ ˈivanɔf]; born 2 May 1960), is a Macedonian politician currently serving as the President of the Republic of Macedonia, in office since 2009.
Gjøvik is a town and a municipality in Oppland county, Norway. The administrative centre of the municipality is the town of Gjøvik.