The 2008–09 Robert Morris Colonials men's basketball team represented Robert Morris University in the 2008–09 NCAA Division I basketball season.

Robert Morris was coached by Mike Rice Jr. and played their home games at the Charles L. Sewall Center in Moon Township, PA.

The Colonials were a members of the Northeast Conference.

They won the 2009 Northeast Conference men's basketball tournament to earn the conference's automatic bid to the 2009 NCAA Division I men's basketball tournament.

2 seed Michigan State in the first round, losing by a score of 77–62.