| Kálmán Tolnai | |
| Nationality: | Hungarian |
| Sport: | Sailing |
| Birth Date: | 28 November 1924 |
| Birth Place: | Balatonfüred, Hungary |
| Death Place: | Zalaegerszeg, Hungary |
Kálmán Tolnai (28 November 1924 - 14 September 2010) was a Hungarian sailor. He competed at the 1960 Summer Olympics and the 1968 Summer Olympics.[1]