The 2003 LSU Tigers football team represented Louisiana State University in the college football season of 2003–2004. Coached by Nick Saban, the Tigers played their home games at Tiger Stadium in Baton Rouge, Louisiana. After a bit of controversy, LSU won the BCS National Championship, the first national championship for LSU since 1958. The Tigers battled for an 11–1 regular season record and then defeated Georgia in the SEC Championship Game to support their bid in the Sugar Bowl to play Oklahoma for the Bowl Championship Series national title.
The regular season ended with three one-loss teams in BCS contention: Oklahoma, LSU, and USC. USC ended the regular season ranked No. 1 and LSU No. 2 in both the AP Poll and the Coaches' Poll. Controversy erupted when the BCS computers selected Oklahoma-LSU as the BCS title game; leading to protests from USC supporters. During the bowl games, USC had a 28–14 win over No. 4 Michigan in the Rose Bowl while LSU beat Oklahoma 21–14 in the Sugar Bowl (designated the BCS title game by the computers). USC remained No. 1 in the final AP Poll and LSU was ranked No. 1 in the final Coaches' Poll.