Donald Gene Verlin (born June 15, 1965) is an American college basketball coach; most recently the head coach at the University of Idaho for eleven seasons, from 2008 to 2019.
Verlin was fired for cause in June 2019 by the university administration following an investigation into NCAA violations; he had been placed on administrative leave less than three weeks earlier due to the investigation.
Assistant coach Zac Claus will serve as interim head coach for the 2019–2020 season.
Prior to Idaho, Verlin was an assistant coach at Colorado State, Utah State, and Cal State Bakersfield.