| Terbutanol | Tert-Butanol |
| terca | obstructionist |
| tercamente | doggedly |
| tercer | third |
| Tercer Circuito de Cortes de Apelaciones de Estados Unidos | United States Court of Appeals for the Third Circuit |
| Tercer Concilio de Constantinopla | Third Council of Constantinople |
| tercer estómago | third stomach |
| Tercer Mundo | Third World |
| Tercer periodo intermedio de Egipto | Third Intermediate Period of Egypt |
| tercer Reich | Third Reich |
| Tercer sector de un insecto | Abdomen |
| Tercer sexo | Third gender |
| Tercer templo de Jerusalén | Third Temple |
| tercera | third |
| Tercera Batalla de Jarkov | Third Battle of Kharkov |
| Tercera batalla de Nola | Battle of Nola |
| Tercera Coalición | War of the Third Coalition |
| Tercera Cruzada | Third Crusade |
| Tercera de Picardia | Picardy third |
| Tercera División Brasileña | Campeonato Brasileiro Série C |
| Tercera División de Escocia | Scottish Football League Third Division |
| Tercera División de España | Tercera División |
| Tercera Edad del Sol | Third Age |
| Tercera Enmienda a la Constitución de los Estados Unidos | Third Amendment to the United States Constitution |
| Tercera epístola de Juan | Third Epistle of John |
| Tercera forma normal | Third normal form |
| Tercera Guera Servil | Third Servile War |
| Tercera Guerra Mitridática | Third Mithridatic War |
| Tercera Guerra Mundial | World War III |
| Tercera Guerra Púnica | Third Punic War |
| Tercera Guerra Sagrada | Second Sacred War |
| Tercera Guerra Servil | Third Servile War |
| Tercera Intervención Norteamericana | Pancho Villa Expedition |
| tercera persona | third person |
| tercera potencia | cube |
| Tercera República Francesa | French Third Republic |
| Tercera República Portuguesa | Portuguese Third Republic |
| Tercera temporada de Los Simpson | The Simpsons |
| Tercera Vía | Third Way |
| Tercermundismo | Third-worldism |
| tercero | third |
| terceto | tercet |
| terciar | thirds |
| Terciario | Tertiary |
| tercio | third |
| terciopelado | velvety |
| terciopelo | velvet |
| terco | pigheaded |
| terco como una mula | stubborn as a mule |
| terebinto | terebinth |
| Terek | Terek River |
| Terence Cook | Terence Cooke |
| Terence Fisher | Terence Fisher |
| Terence Hill | Terence Hill |
| Terence McKenna | Terence McKenna |
| Terence Young | Terence Young |
| Terencio | Terence |
| Terengganu | Terengganu |
| Tereo | Tereus |
| Teresa | Teresa |
| Teresa Carreño | Teresa Carreño |
| Teresa Cristina de Borbón y Dos Sicilias | Teresa of the Two Sicilies |
| Teresa de Calcuta | Mother Teresa |
| Teresa de Jesús | Teresa of Ávila |
| Teresa de Lisieux | Thérèse de Lisieux |
| Teresa de Los Andes | Teresa of the Andes |
| Teresa Neumann | Therese Neumann |
| Teresina | Teresina |
| terfenilos policlorados | polychlorinated terphenyl |
| tergiversación | prevarication |
| tergiversador | prevaricator |
| tergiversadora | prevaricator |
| tergiversar | prevaricate |
| Teri Hatcher | Teri Hatcher |
| Terios | Daihatsu Terios |
| Teriyaki Boyz | Teriyaki Boyz |
| Terlano | Terlan |
