Majin may refer to:
- Majin, Ilam
- Majin, Kurdistan
- Majin District, in Ilam Province, Iran
- Majin Rural District, in Ilam Province, Iran
- Majin, a village in Zhejiang, China
- Majin Boo, an antagonist in the Dragon Ball Z series
Majin may also refer to Taebong (901–918), a Korean state known as Majin between 904 and 911.