Guga may refer to:
- Guga River (Papua New Guinea)
- Guga, a tributary of the river Iad in Romania
- Guga, a village in Cășeiu Commune, Cluj County, Romania
- Guga, the Scottish name for the chicks of the Northern gannet
- Guga (Punjab), a village near to Amritsar in India, where Jassa Singh Ramgarhia was born
- Gugga, a figure in Punjabi legend
- Aurel Guga (1898-1936), Romanian footballer
- Bledion Guga (born 1986), Albanian footballer
- Gustavo Kuerten (born 1976), Brazilian tennis player
- Guga (footballer, born 1964), Alexandre da Silva, Brazilian footballer
- Guga (footballer, born 1977), José Augusto Santana Santos, Brazilian footballer
- Guga (footballer, born 1998), Cláudio Rodrigues Gomes, Brazilian footballer
- Guga (footballer, born 1997), Gonçalo Rodrigues, Portuguese footballer
- Guga Foods (born 1980), Brazilian-American chef and YouTuber
- Graphical unitary group approach (GUGA), in quantum chemistry