The 2008–09 Siena Saints men's basketball team represented Siena College in the 2007–08 college basketball season.

This was head coach Fran McCaffery's fourth season at Siena.

The Saints competed in the Metro Atlantic Athletic Conference and played their home games at Times Union Center.

They also won the 2009 MAAC men's basketball tournament for the second consecutive season to earn the conference's automatic bid to the NCAA tournament as No.

8 seed Ohio State,[1] the Saints lost to No.