2003 in Ecuadorian football

The 2003 season is the 81st season of competitive football in Ecuador.

Serie A

 * Champion: LDU Quito (7th title)
 * International cup qualifiers:
 * 2004 Copa Libertadores: LDU Quito, Barcelona, El Nacional
 * 2004 Copa Sudamericana: LDU Quito, Barcelona
 * Relegated: Técnico Universitario, Manta

Serie B

 * Winner: Olmedo (2nd title)
 * Promoted: Olmedo, Macará
 * Relegated: Esmeraldas Petrolero, UDJ Quinindé

Segunda

 * Winner: LDU Loja
 * Promoted: LDU Loja, LDU Portoviejo

Senior team
The Ecuador national team played ten matches in 2003: four 2006 FIFA World Cup qualifiers, and six friendlies.

2006 FIFA World Cup qualifiers
Qualification for the 2006 FIFA World Cup began in 2003.