The 2003 UNCAF Nations Cup was an association football tournament.

It was held in two venues in Panama in February 2003, and was played in a round robin tournament, each of the 6 teams playing each other once.

Costa Rica won their record fourth title, and along with the Guatemala, El Salvador, and Honduras, qualified to the 2003 CONCACAF Gold Cup.

6 UNCAF teams participated on the tournament Belize Did not enter the tournament All matches were played at Estadio Rommel Fernández in Panama City.