| Mikhail Ryzhak | |
| Nationality: | Russian |
| Sport: | Water polo |
| Birth Date: | 10 March 1927 |
| Birth Place: | Soviet Union |
Mikhail Mikhaylovich Ryzhak (Russian: Михаил Михайлович Рыжак, March 10, 1927 - March 2003) was a Ukrainian water polo player who competed for the Soviet Union in the 1956 Summer Olympics.
He was born in Kharkiv, Ukrainian SSR.
Ryzhak was part of the Soviet team which won the bronze medal in the 1956 tournament. He played one match as goalkeeper.