| Port Code | Port Name | Country |
| USTLE | Timberlake | United States |
| USTLF | Telida | United States |
| USTLG | Telogia | United States |
| USTLH | Tallahassee | United States |
| USTLJ | Tatalina | United States |
| USTLK | Turlock | United States |
| USTLL | Tulelake | United States |
| USTLM | Tillamook | United States |
| USTLN | Atlanta | United States |
| USTLR | Tulare | United States |
| USTLT | Tuluksak | United States |
| USTLY | Tully | United States |
| USTMA | Tifton | United States |
| USTMB | Timberville | United States |
| USTMC | Temecula | United States |
| USTMG | Tallmadge | United States |
| USTML | Temple | United States |
| USTMM | Tamms | United States |
| USTMN | Trumann | United States |
| USTMP | Temple | United States |
| USTMQ | Tamaqua | United States |
| USTMV | Thomasville | United States |
| USTMX | Tremont | United States |
| USTNC | Tin City | United States |
| USTND | Cortland | United States |
| USTNG | Trion | United States |
| USTNH | Huron | United States |
| USTNI | Tunica | United States |
| USTNK | Tununak | United States |
| USTNL | Tinley Park | United States |
| USTNO | Powell | United States |
| USTNP | Twentynine Palms | United States |
| USTNR | Trenton | United States |
| USTNS | Taunton | United States |
| USTNU | Newton | United States |
| USTNW | Tarrant | United States |
| USTOA | Torrance | United States |
| USTOB | Tomball | United States |
| USTOC | Toccoa | United States |
| USTOD | Toronto | United States |
| USTOG | Togiak Village | United States |
| USTOH | Tonopah | United States |
| USTOI | Troy | United States |
| USTOK | Tonkawa | United States |
| USTOL | Toledo | United States |
| USTON | Sutton | United States |
| USTOO | Tooele | United States |
| USTOP | Topeka | United States |
| USTOR | Torrington | United States |
| USTOS | Thonotosassa | United States |
| USTOT | Totowa | United States |
| USTOW | Towanda | United States |
| USTOX | Tremont | United States |
| USTPA | Tampa | United States |
| USTPE | Tempe | United States |
| USTPH | Tonopah | United States |
| USTPK | Topeka | United States |
| USTPL | Temple | United States |
| USTPM | Tompkinsville | United States |
| USTPO | Tanalian Point | United States |
| USTPP | Toppenish | United States |
| USTPS | Thompson | United States |
| USTPT | Tipton | United States |
| USTPV | Tiptonville | United States |
| USTPW | Thompsontown | United States |
| USTQD | Toledo | United States |
| USTQK | Topeka | United States |
| USTQL | Toluca Lake | United States |
| USTQO | Tobaccoville | United States |
| USTRA | Trainer | United States |
| USTRB | Latrobe | United States |
| USTRC | Tracy | United States |
| USTRF | Thorofare | United States |
| USTRH | Trona | United States |
| USTRI | Bristol-Johnson City-Kingsport Apt | United States |
| USTRI | Johnson City-Kingsport-Bristol Apt | United States |
| USTRI | Kingsport-Bristol-Johnson City Apt | United States |
| USTRI | Kingsport Apt | United States |
| USTRJ | Three Rivers | United States |
| USTRK | Tamarac | United States |
| USTRL | Terrell | United States |
| USTRM | Thermal | United States |
| USTRN | Trenton | United States |
| USTRO | Trotwood | United States |
| USTRP | Tree Point | United States |
| USTRR | Trout River | United States |
| USTRS | Struthers | United States |
| USTRT | Tremonton | United States |
| USTRU | Trussville | United States |
| USTRV | Shorterville | United States |
| USTRX | Trenton | United States |
| USTRY | Troy | United States |
| USTRZ | Troutman | United States |
| USTSA | Savannah | United States |
| USTSC | Tuscumbia | United States |
| USTSD | Townshend | United States |
| USTSG | Tanacross | United States |
| USTSH | Topsham | United States |
| USTSJ | Thomson | United States |
| USTSK | Thomaston | United States |