The 2003–04 First Division season was the 26th of the amateur competition of the first-tier football in Guinea-Bissau.
[1] The season began on 27 December 2003 and finished on 17 June 2004, this was their next in two years.
Sporting de Bissau won their eleventh title and finished with 39 points and to financial reasons did not qualify and competed in the 2005 CAF Champions League the following season.
Flamengo was last place with 13 points and the only club who competed relegated.
The league was contested by 10 teams with Sporting de Bissau winning the championship.