The 2009–10 Maryland Terrapins men's basketball team represented the University of Maryland in the 2009–10 college basketball season as a member of the Atlantic Coast Conference (ACC). Gary Williams was in his 21st year as the team's head coach. The Terrapins finished the season 24–9, 13–3 in ACC play, to claim a share of the regular-season championship with Duke. They lost in the quarterfinals of the 2010 ACC men's basketball tournament to Georgia Tech. They received an at-large bid to the 2010 NCAA Division I men's basketball tournament, earning a 4-seed in the Midwest Region. They defeated 13-seed Houston in the first round before losing to 5-seed and AP #13 Michigan State in the second round. In a rare double-sweep of regular-season awards, Williams was voted as the ACC Coach of the Year while Greivis Vásquez was named the ACC Player of the Year.

Preseason

Recruiting

Roster

Season recap

The season began with Greivis Vásquez, Eric Hayes, and Landon Milbourne all leading the team as Seniors.

Accolades

Gary Williams ACC Coach of the Year Greivis Vásquez ACC Player of the Year 2nd Team All-American Bob Cousy Award winner The Sporting News First-Team All-American Wooden Award finalist Jordan Williams ACC All-Freshman team

Schedule

!colspan=9 style=| Exhibition !colspan=9 style=| Regular season !colspan=9 style=| <span style=>ACC tournament !colspan=10 style=| <span style=>NCAA tournament