The 2008–09 Butler Bulldogs men's basketball team represented Butler University in the 2008–09 NCAA Division I men's basketball season. Their head coach was Brad Stevens, serving his 2nd year. The Bulldogs played their home games at the Hinkle Fieldhouse, which has a capacity of approximately 10,000. The Bulldogs won the 2009 Horizon League Men's Basketball Regular Season Championship and received an at-large bid to the 2009 NCAA Division I men's basketball tournament, earning a 9 seed in the South Region. They fell to 8 seed LSU.

Roster

Schedule

!colspan=12 style=|Exhibition !colspan=9 style="background:#13294B; color:#FFFFFF;"|Non-conference regular season !colspan=9 style="background:#13294B; color:#FFFFFF;"|Horizon League Play !colspan=9 style="background:#13294B; color:#FFFFFF;"| Horizon League tournament !colspan=9 style="background:#13294B; color:#FFFFFF;"| NCAA tournament

Rankings