| Birth Date: | 1930 |
| Birth Place: | Norilsk, Russian SFSR, Soviet Union |
| Death Date: | [1] |
| Death Place: | Moscow, Russian SFSR, Soviet Union |
| Sport: | Diving |
| Show-Medals: | yes |
Mikhail Chachba (Russian: Михаил Чачба, 1930 - 1967) was a Soviet diver. He competed in the 10 m platform at the 1952 and 1956 Summer Olympics and finished in 17th place and 8th place, respectively. He won silver medals in this discipline at the European championships in 1954 and 1958.