| Theobald II of Navarre | Tebaldo II |
| Theobald of Bavaria | Teodebaldo |
| Theobald von Bethmann Hollweg | Theobald von Bethmann-Hollweg |
| Theobald Wolfe Tone | Theobald Wolfe Tone |
| theobromine | teobromina |
| theocracy | teocrazia |
| Theocrasy | Teocrazia |
| Theocritus | Teocrito |
| Theodahad | Teodato |
| Theodatus | Teodato |
| Theodbert of Bavaria | Teodeberto di Baviera |
| Theodelinda | Teodolinda |
| Theodemar | Teodemaro |
| Theodemir | Teodemaro |
| Theodemund | Teodemondo |
| theodicy | teodicea |
| Theodo of Bavaria | Teodone II di Baviera |
| theodolite | teodolite |
| Theodor Adorno | Theodor Adorno |
| Theodor Billroth | Theodor Billroth |
| Theodor Brorsen | Theodor Brorsen |
| Theodor de Bry | Johann Theodor de Bry |
| Theodor Herzl | Theodor Herzl |
| Theodor Heuss | Theodor Heuss |
| Theodor Mommsen | Theodor Mommsen |
| Theodor Schwann | Theodor Schwann |
| Theodor Svedberg | Theodor Svedberg |
| Theodor von Oppolzer | Theodor von Oppolzer |
| Theodor Zwinger | Theodor Zwinger |
| Theodora | Teodora |
| Theodora Komnene | Teodora di Trebisonda |
| Theodora of Trebizond | Teodora di Trebisonda |
| Theodore | Teodoro |
| Theodore Beza | Teodoro di Bèze |
| Theodore Dreiser | Theodore Dreiser |
| Theodore Edgar McCarrick | Theodore Edgar McCarrick |
| Theodore Gill | Theodore Nicholas Gill |
| Theodore Harold Maiman | Theodore Harold Maiman |
| Theodore I Laskaris | Teodoro I di Nicea |
| Theodore I of Montferrat | Teodoro I del Monferrato |
| Theodore II | Antipapa Teodoro II |
| Theodore II Laskaris | Teodoro II di Nicea |
| Theodore II of Montferrat | Teodoro II del Monferrato |
| Theodore Kaczynski | Theodore Kaczynski |
| Theodore Long | Theodore Long |
| Theodore of Mopsuestia | Teodoro di Mopsuestia |
| Theodore Prodromus | Teodoro Prodromo |
| Theodore Racing | Theodore Racing |
| Theodore Roosevelt | Theodore Roosevelt |
| Theodore Sturgeon | Theodore Sturgeon |
| Theodore the Studite | Teodoro Studita |
| Theodore von Kármán | Theodore von Kármán |
| Theodore William Richards | Theodore William Richards |
| Theodoret | Teodoreto di Cirro |
| Theodoric | Teodorico |
| Theodoric I | Teodorico I |
| Theodoric II | Teodorico II |
| Theodoric Strabo | Teodorico Strabone |
| Theodoric the Great | Teodorico il Grande |
| Theodoros Angelopoulos | Theo Angelopoulos |
| Theodoros Papaloukas | Theodoros Papaloukas |
| Theodoros Zagorakis | Theodoros Zagorakis |
| Theodorus of Cyrene | Teodoro di Cirene |
| Theodosia | Teodosia |
| Theodosian dynasty | Casata di Teodosio |
| Theodosii Spassov | Theodosii Spassov |
| Theodosios III | Teodosio III di Bisanzio |
| Theodosius | Teodosio |
| Theodosius I | Teodosio I |
| Theodosius II | Teodosio II di Bisanzio |
| Theodosius of Bithynia | Teodosio di Bitinia |
| Theodosius of Kiev | San Teodosio di Pečerska |
| Theodric of Bernicia | Theodric di Bernicia |
| Theodulf of Orléans | Teodulfo |
| Theofanis Gekas | Theofanis Gekas |
| Theognis | Teognide |
| Theognis of Megara | Teognide |
| Theognostus | Teognoste il Greco |
| theologian | teologo |
| theological | teologico |
| Theological virtues | Virtù teologale |
| theology | teologia |
| Theon of Alexandria | Teone di Alessandria |
| Theon of Samos | Teone di Samo |
| Theophan the Recluse | Teofane il Recluso |
| Theophanes the Confessor | Teofane Confessore |
| Theophano | Teofano |
| Theophanu | Teofano del Sacro Romano Impero |
| theophany | teofania |
| Theophil Freiherr von Hansen | Theophil Hansen |
| Theophilos | Teofilo di Bisanzio |
| Theophilus | Teofilo |
| Theophilus of Alexandria | Teofilo di Alessandria |
| Theophilus Presbyter | Teofilo monaco |
| Theophoric name | Nome teoforico |
| Theophrastus | Teofrasto |
| Theophylact Simocatta | Teofilatto Simocatta |
| Theora | Theora |
| theorbo | chitarrone |
| theorem | teorema |
