The football (soccer) Campeonato Brasileiro Série C 2003, the third level of Brazilian National League, was played from September 17 to December 7, 2003. The competition had 95 clubs[1] and two of them were promoted to Série B.
Ituano finished the final phase group with most points and was declared 2003 Brazilian Série C champions, claiming the promotion to the 2004 Série B along with Santo André, the runners-up.