| Year: | 2003 |
| Dates: | March 6 – October 8 |
| Num Teams: | 16 |
| Associations: | 9 |
| Champion Other: |  Toluca |
| Count: | 2 |
| Second Other: | Morelia |
| Matches: | 30 |
| Goals: | 106 |
| Top Scorer: | Reinaldo Navia (5 goals) |
| Prevseason: | 2002 |
| Nextseason: | 2004 |
The 2003 CONCACAF Champions' Cup was the 38th edition of the annual international club football competition held in the CONCACAF region (North America, Central America and the Caribbean), the CONCACAF Champions' Cup. It was won by Club Toluca after a 5–4 aggregate win over countryfellow club Morelia in the final.[1] [2] The tournament was held between March 6 and October 8.[3] The 16-team format was scrapped for an eight-team format in 2004.
Club Toluca - 2002 Apertura champion Morelia - 2002 Apertura runner-up Club América - 2002 Verano champion Club Necaxa - 2002 Verano runner-up
Los Angeles Galaxy - 2002 MLS Cup champion and 2002 MLS Supporters Shield winner New England Revolution - 2002 MLS Cup runner-up San Jose Earthquakes - 2002 MLS Supporters Shield runner-up Columbus Crew - 2002 U.S. Open Cup winner
Alajuelense – 2002 UNCAF Interclub Cup winner
Árabe Unido – 2002 UNCAF Interclub Cup runner-up
Motagua – 2002 UNCAF Interclub Cup third place
Comunicaciones – 2002 UNCAF Interclub Cup fourth place Municipal – 2002 UNCAF Interclub Cup first stage runner-up
FAS – 2002 UNCAF Interclub Cup first stage runner-up
W Connection - 2002 CFU Club Championship finalist
Arnett Gardens - 2002 CFU Club Championship finalist
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| CONCACAF Champions' Cup 2003 Winners | |
|---|---|
| |
| Club Deportivo Toluca Second Title |
| Rank | Player | Club | Goals | |
|---|---|---|---|---|
| 1 |  Reinaldo Navia | Morelia | 5 | |
| 2 |  Vicente Sánchez | Toluca | 4 | |
| Edson Buddle | Columbus Crew | 4 | ||
| Marcelo Lipatin | América | 4 | ||
| 5 | Edgar García | Toluca | 3 | |
| Gonzalo Romero | Municipal | 3 | ||
| Erick Scott | LD Alajuelense | 3 | ||
| 8 |  Ariel Franco | Toluca | 2 | |
| Israel López | Toluca | 2 | ||
| Amado Guevara | Motagua | 2 | ||
| Alexi Lalas | Los Angeles Galaxy | 2 | ||
| Juan Franco | Necaxa | 2 | ||
| Rodolfo Espinoza | Necaxa | 2 | ||
| Manny Lagos | San Jose Earthquakes | 2 | ||
| Cuauhtémoc Blanco | América | 2 | ||
| Santiago Fernández | América | 2 | ||
| Rolando Fonseca | LD Alajuelense | 2 | ||
| Adolfo Bautista | Morelia | 2 | ||
 Roberto Palacios | Morelia | 2 | ||
| Ismael Íñiguez | Morelia | 2 | ||
| Damián Álvarez | Morelia | 2 | ||
| 22 | Various | 1 |