Gangster Planet designates planets, usually colonized by humans, ruled by organized crimes.
- Merseia - Poul Anderson's Ensign Flandry universe
- Palermo - Mack Reynolds' novel Planetary Agent X
- Peoples α - Futurama anima5ted television series
- Sicily 8 - Futurama animated televisions series
- Sigma Iotia II - A Piece of the Action episode of Star Trek: The Original Series.