The 2017–18 George Washington Colonials men's basketball team represented George Washington University during the 2017–18 NCAA Division I men's basketball season. The Colonials were led by second-year head coach Maurice Joseph. They played their home games at the Charles E. Smith Center in Washington, D.C. as members of the Atlantic 10 Conference. They finished the season 15–18, 7–11 in A-10 play to finish in a three-way tie for 10th place. They defeated Fordham in the first round of the A-10 tournament before losing to Saint Louis in the second round.