- Georgiadis Giannis, Musician
- Georgiadis Nicolaos, Painter, Set designer, Costume designer
- Georgiadou Myrto, Soloist, Mezzo-Soprano
- Georgiadou Fylli, GNO Chorus member, Soprano
- Georgiadou-Anastasiou Rena, Painter, Set Designer, Costume Designer
- Georgiou T.
- Gerakis Andreas, Costume Designer
- Gerou Anastasios, GNO Chorus Member, Tenor
- Ghiuselef Nicola, Soloist, Bass
- Giacomini Giuseppe, Soloist, Tenor
- Giacosa Giuseppe, Librettist
- Giancarlo Del Monaco, Director
- Giannattasio Carmen, Soloist, Soprano
- Giannetopoulou Ekaterini, Soloist, Soprano
- Giannoulis Christos, GNO Chorus Member, Tenor
- Giannoulis Stavros, Soloist, Tenor
- Giatrou P., Soloist
- Gille Philippe, Librettist
- Giokarinis Nikolaos, Journalist
- Giordano Umberto, Composer
- Giordano Umberto, Composer
- Giovanni Targioni-Tozzetti Giovanni, Librettist
- Giovaridou Maria, Soloist, Mezzo-Soprano
- Giovine Franco, Soloist, Baritone
- Giraudeau Philippe, Choreographer
- Giuliacci Piero, Soloist, Tenor
- Glantzi Soula, Soloist, Soprano
- Glaskin Claire, Choreographer
- Gluck Christoph Willibald, Composer
- Glynatsis Themelis
- Glynos Nikolaos, Tenor
- GNO Choir
- GNO Orchestra
- Gobbi Tito, Soloist, Baritone, Director
- Goebbel Wolfgang, Light Designer
- Gogosis Dimitris, Conductor
- Golesorkhi Anooshah, Soloist, Baritone
- Golovatenko Igor, Soloist, Baritone
- Goodman Alice, Librettist
- Gottlieb Stephanie, Librettist
- Gounod Charles, Composer
- Gournia Maria, GNO Chorus Member, Soprano
- Gourzi Konstantia, Conductor
- Goutou-Mog Nana, Soloist, Soprano
- Goyos Khharalampos, Composer, Conductor
- Gramss Eike, Director
- Grapsas E., GNO Chorus Member, Tenor
- Gravanis K., Soloist
- Graves Denyce, Soloist, Mezzo-Soprano
- Graziani Maurizio, Soloist, Tenor
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