| Kass Kovalcheck | |
| Birth Date: | 31 March 1907 |
| Death Place: | near Irwin, Pennsylvania, U.S. |
| Player Years1: | 1927–1930 |
| Player Team1: | Duquesne |
| Player Positions: | Fullback |
| Coach Years1: | 1931–1940 |
| Coach Team1: | Duquesne Prep (PA) |
| Coach Years2: | 1941 |
| Coach Team2: | McDonell Central Catholic HS (WI) |
| Coach Years3: | 1942 |
| Coach Team3: | Bridgeville HS (PA) |
| Coach Years4: | 1945 |
| Coach Team4: | Jacksonville NAS (assistant) |
| Coach Years5: | 1947–1948 |
| Coach Team5: | Duquesne |
| Overall Record: | 4–15 (college) |
Kassian A. Kovalcheck (March 31, 1907 – October 26, 1969) was an American football player and coach. He served as the head football coach at Duquesne University from 1947 to 1948, compiling a record of 4–15. Kovalcheck played college football as a fullback at Duquesne from 1927 to 1930.[1] [2] He died at the age of 62, on October 26, 1969, after suffering from heart attack while driving near Irwin, Pennsylvania.[3]