2003–04 Southern Illinois Salukis men's basketball team

The 2003–04 Southern Illinois Salukis men's basketball team represented Southern Illinois University Carbondale during the 2003–04 NCAA Division I men's basketball season. The Salukis were led by first-year head coach Matt Painter and played their home games at the SIU Arena in Carbondale, Illinois as members of the Missouri Valley Conference. They finished the season 25–5, 17–1 in MVC play to finish as regular season champion. They lost in the semifinals of the MVC tournament to Missouri State, but did receive an at-large bid to the NCAA tournament as No. 9 seed in the West region. The Salukis fell to No. 8 seed Alabama, 65–64, in the opening round.

Schedule and results
!colspan=12 style=| Non-conference regular season

!colspan=12 style=| Missouri Valley regular season

!colspan=12 style=| Missouri Valley tournament

!colspan=12 style=| NCAA tournament

Awards and honors

 * Darren Brooks – MVC Player of the Year
 * Matt Painter – MVC Coach of the Year (second of three straight season a different Saluki head coach received the honor – Bruce Weber (2003) and Chris Lowery (2005))