The 2008–09 Oregon State Beavers men's basketball team represented Oregon State University in National Collegiate Athletic Association (NCAA) Division I men's basketball during the 2008–09 season.
Playing in the Pacific-10 Conference (Pac-10) and led by first-year head coach Craig Robinson, the Beavers finished the season with a 18–18 overall record and won the 2009 College Basketball Invitational.
[1][2] It was Oregon State's first-ever postseason tournament championship.
[3] Their 12-win improvement over the previous season was the third-highest turnaround in Division I in 2008–09.
[4][5][6] In Pac-10 play, the Beavers finished in eighth place with a 7–11 record.