| Tacoma Stars | Major Arena Soccer League | — | 2003 | accesso ShoWare Center |
| Tacoma Stars | Major Indoor Soccer League | — | 1983 | — |
| Tallahassee Scorpions | Eastern Indoor Soccer League | — | 1997 | Donald L. Tucker Civic Center |
| Tallahassee Tempest | — | Tallahassee | 1998 | — |
| Tampa Bay Hawks | USL League Two | — | 2000 | — |
| Tampa Bay Rowdies | USL Championship | St. Petersburg | June 18, 2008 | George M. Steinbrenner Field, Al Lang Stadium |
| Tan Holdings FC | M*League Division 1 | — | 2008 | Ada Gym |
| Team America | North American Soccer League | Washington, D.C. | 1983 | Robert F. Kennedy Memorial Stadium |
| Team Hawaii | North American Soccer League | Honolulu | 1977 | Aloha Stadium |
| Tebo Yacht Basin F.C. | — | New York City | 1918 | — |
| Temple United FC | Texas Premier Soccer League | — | March 11, 2015 | — |
| Texas Outlaws | Major Arena Soccer League | — | 2008 | — |
| Texas Strikers | Major Arena Soccer League | — | 2012 | Ford Arena |
| The Island F.C. | MLS Next Pro | Uniondale | 2025 | — |
| Tobacco Road FC | USL League Two | — | 2013 | Durham County Stadium |
| Todd Shipyards | American Soccer League | New York City | 1921 | — |
| Toledo Slayers | USL League Two | — | 2003 | Lucas County Recreation Center |
| Toledo United FC | Great Lakes Premier League | — | 2016 | Springfield Local High School |
| Tormenta FC | USL League One | Statesboro | 2015 | Bo Pitts Field |
| Tornados de Humacao | Puerto Rico Soccer League | Humacao | 1994 | Nestor Morales Stadium |
| Toronto FC | Major League Soccer | Toronto | 2006 | BMO Field |
| Treasure Coast Tritons | USL League Two | Port St. Lucie | 2016 | — |
| TSC Maryland Red Devils | National Premier Soccer League | — | 2009 | — |
| Tucson Amigos | United Soccer League | Arizona | 1989 | — |
| Tucson Fireballs | — | Arizona | 1997 | — |
| Tucson Tiburons | National Premier Soccer League | Arizona | 2003 | Mountain View High School |
| Tulsa Revolution | Major Arena Soccer League | — | 2012 | Arvest Convention Center |
| Tulsa Roughnecks | North American Soccer League | Tulsa | 1978 | Skelly Field at H. A. Chapman Stadium |
| Tulsa Roughnecks | — | Tulsa | 1993 | — |
| Tulsa Spirit | Women's Premier Soccer League | — | 2007 | — |
| Turlock Express | Major Arena Soccer League 2, Major Arena Soccer League | Turlock | 2011 | — |
| Twin Cities Phoenix | USL League Two | — | 1997 | — |