Gachi (Persian: گچي) may refer to:
- Gachi, Fars
- Gachi, Mamasani, Fars Province
- Gachi, Isfahan
- Gachi, Nain, Isfahan Province
- Gachi, Kohgiluyeh and Boyer-Ahmad
- Gachi, Lorestan
- Gachi, Sistan and Baluchestan
- Gachi, West Azerbaijan
- Gachi District, in Ilam Province
- Gachi Rural District, in Ilam Province