John M. Wessels (February 13, 1938 – December 3, 1994) was an American college basketball standout for Illinois in the late 1950s and early 1960s. A center, Wessels averaged 13.4 points and 8.7 rebounds per game in his three years of varsity basketball for the Fighting Illini, earning a varsity letter each year. Graduating from Rockford West High School, Wessels led the Warriors to the IHSA state championship during consecutive seasons in 1955 and 1956.