The 2009–10 Georgetown Hoyas men's basketball team represented Georgetown University in the 2009–2010 NCAA Division I basketball season. The Hoyas were coached by John Thompson III and played their home games at the Verizon Center in Washington, D.C. The Hoyas were members of the Big East Conference. They finished the season 23–11, 10–8 in Big East play. They advanced to the championship game of the 2010 Big East men's basketball tournament before losing to West Virginia. They received an at-large bid to the 2010 NCAA Division I men's basketball tournament, earning a 3 seed in the Midwest Region, where they were upset by 14 seed Ohio in the first round.

John Robert Thompson III is a professional basketball coach and executive who has been the assistant coach for the United States men's national basketball team since 2017. He previously served as the head coach of the men's basketball team at Georgetown University. He grew up in Washington, D.C., and was named first team All-Metro by The Washington Post while playing for Gonzaga College High School in 1984. Thompson was hired on April 20, 2004, to replace Craig Esherick and was fired at the end of the 2017 season. Prior to being hired at Georgetown, Thompson was the head coach for four years at his alma mater, Princeton University. Thompson is the son of John Thompson Jr, Georgetown's head coach from 1972 to 1999, and is a 1988 graduate of Princeton University.