The 2009–10 Clemson Tigers men's basketball team represented Clemson University in the 2009–10 college basketball season. Their head coach was Oliver Purnell. The team played its home games at Littlejohn Coliseum in Clemson, South Carolina and are members of the Atlantic Coast Conference. All games were produced and broadcast locally by the Clemson Tigers Sports Network. The Tigers finished the season 21–11, 9–7 in ACC play. They lost in the first round of the 2010 ACC men's basketball tournament. They received an at-large bid to the 2010 NCAA Division I men's basketball tournament, earning a 7 seed in the East Region, where they lost to 10-seed Missouri in the first round.