2003 UNCAF Interclub Cup

The 2003 UNCAF Interclub Cup was the 21st edition of the international club football competition held in the UNCAF region representing the seven nations of Central America. Costa Rican side Deportivo Saprissa obtained their fifth regional title after defeating Comunicaciones F.C. in the final match. Both clubs, along with third placed Liga Deportiva Alajuelense, qualified to the 2004 CONCACAF Champions' Cup.

Qualifying round

 * Alajuelense won 15–0 on aggregate score.

Group 1
Diriamba, Estelí, and Managua, Nicaragua

Group 2
All matches were at the Estadio Cementos Progreso, Guatemala City, Guatemala

Group 3
All matches were at the Estadio Francisco Morazán, San Pedro Sula, Honduras

Final round
Los Angeles, USA

Final

 * Deportivo Saprissa 2003 UNCAF champions.
 * Deportivo Saprissa, Comunicaciones F.C., Liga Deportiva Alajuelense advance to 2004 CONCACAF Champions' Cup quarterfinals.
 * As Guatemala were suspended by CONCACAF and FIFA in January 2004, the place of Comunicaciones F.C. was given to C.D. FAS (as second best runners-up in the group stage).