| János Mogyorósi-Klencs | |
| Birth Date: | 31 March 1922 |
| Birth Place: | Debrecen, Hungary |
| Sport: | Gymnastics |
János Mogyorósi-Klencs (31 March 1922 – 22 July 1997) was a Hungarian gymnast, born in Debrecen. He competed in gymnastics events at the 1948 Summer Olympics and the 1952 Summer Olympics. He won a bronze medal with the Hungarian team at the 1948 Summer Olympics, as well as an individual silver medal in floor exercise, and a bronze medal in horse vault.[1]