- Theofanous Sophianna, Librettist
- Theologidis Frixos, Director
- Therianou Evaggelia, Set Designer
- Thoma Maria, Soloist, Soprano
- Thompson Adrian, Soloist, Tenor
- Thrasyvoulidou Mara, Soloist, Soprano
- Ticho(Frederick Christiansen) Parly, Soloist, Tenor
- Tiliakos Dimitris, Soloist, Baritone
- Tilios Nikos, Dancer
- Tissier Claude, Lighting designer
- Toch Ernst, Composer
- Todisco Nunzio, Soloist, Tenor
- Todisco Virginia
- Togliani Carlo, Soloist, Baritone
- Toplak Imre, Conductor
- Tottola Andrea Leone, Librettist
- Toubakaris Fragiskos, Dancer
- Touloudis Petros, Visual Artist
- Tournaki Olga, Actress
- Traka Christina
- Traub Reinhard, Lighting Designer
- Travers Leslie, Set and costume designer
- Treleaven John, Soloist, Tenor
- Tremmel Anton, Chorus master
- Triandi Alexandra, Soloist, Soprano
- Triantafyllopoulou Eleni, Dramaturg
- Triantafyllou Kimon, Director, Soloist, Tenor
- Trianttafyllou Angelos, Composer
- Trikolidis Karl Kaspar, Conductor
- Tritsi Georgia, Dancer
- Trivizas Eugene, Writer, Librettist
- Trogadis Kostas, Soloist, Tenor
- Troitski Alexandros, Soloist, Bass
- Troizos Ermis, Soloist, Tenor
- Trotta Bernardino, Soloist, Tenor
- Troussa Ιοulia, Soloist, Soprano
- Troussas Dionyssis, Soloist, Baritone
- Troussas Takis
- Troyanos Tatiana, Soloist, Mezzo-Soprano
- Trypani Dimitra, Composer
- Trypani Dimitra, Composer
- Tsabalikas Aris, Actor
- Tsabali-Trikolidi Varvara, Soloist, Soprano
- Tsachouridou Tatiana, Soloist, Soprano
- Lignou-Tsakiridi Angeliki, GNO Chorus Member, Soprano
- Tsakiridi Raia, Director
- Tsakiridis Danis, Soloist, Tenor
- Tsalikian Siranous, Soloist, Soprano
- Tsami Ioanna, Costume designer
- Tsantalos Ahilleas, Soloist, Bass
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