| Mieczysław Rybarczyk | |
| Birth Date: | 1 September 1941 |
| Birth Place: | Warsaw, General Government |
| Death Place: | Vienna, Austria |
| Singlesrecord: | 0–5 |
| Highestsinglesranking: | No. 273 (3 June 1974) |
| Frenchopenresult: | 1R (1964, 1969, 1970, 1973) |
| Wimbledonresult: | Q2 (1970) |
| Doublesrecord: | 0–4 |
| Frenchopendoublesresult: | 2R (1969, 1970) |
| Wimbledondoublesresult: | 2R (1969) |
| Frenchopenmixedresult: | 1R (1969, 1970) |
Mieczysław Rybarczyk (1 September 1941 – 29 July 1983[1]) was a Polish professional tennis player.
Born in Warsaw, Rybarczyk was a member of the Poland Davis Cup team between 1965 and 1970, winning four singles and one doubles rubber. He won two singles rubbers in Poland's 3–2 triumph against Hungary in 1969, when he got the better of István Gulyás and Péter Szőke.[2]
Rybarczyk played in the main draws of both the French Open and Wimbledon during his career. This includes a first round loss to Arthur Ashe at the 1970 French Open.[3]