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.

[1] Both clubs, along with third placed Liga Deportiva Alajuelense, qualified to the 2004 CONCACAF Champions' Cup.

Diriamba, Estelí, and Managua, Nicaragua

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