| Code | Team Name |
|---|---|
| CDC | CD Chivas USA |
| CHI | Chicago Fire |
| CMB | Columbus Crew |
| COL | Colorado Rapids |
| DAL | FC Dallas |
| DCU | DC United |
| HOU | Houston Dynamo (formerly San Jose Earthquakes) |
| KCW | Kansas City Wizards |
| LAG | Los Angeles Galaxy |
| NER | New England Revolution |
| NRB | New York Red Bulls (formerly MetroStars) |
| RSL | Real Salt Lake |
| TOR | Toronto FC (2007 expansion team) |