The 1998–99 Temple Owls men's basketball team represented Temple University as a member of the Atlantic 10 Conference during the 1998–99 NCAA Division I men's basketball season. The team was led by head coach John Chaney and played their home games at the Liacouras Center. The Owls received an at-large bid to the NCAA tournament as No. 6 seed in the East region. Temple made a run to the Elite Eight and finished with a record of 24–11 (13–3 A-10).