- Ignatiadou Georgia, Soloist, Soprano
- Stravinsky Igor, Composer
- Ikaia-Purdy Keith, Soloist,Tenor
- Ikeoutsi Misa, Soloist, Soprano
- Iliopoulou Gogo (Georgia), Soloist, Soprano
- Illes Eva, Soloist, Soprano
- Illica Luigi, Librettist
- Ingalls James F, Lighting Designer
- Inghilleri Giovanni, Soloist, Baritone
- Interisano Antonino, Soloist, Tenor
- Ioannidis Giannis, Composer, Conductor
- Ioannidis Lyssandros, Soloist, Tenor
- Ioannidou Eleni, Soloist, Soprano
- Ioannou-Ralli Iphigeneia, Soloist, Soprano
- Ionata Maria Pia
- Iordanidis Giannis, Director
- Isaakidou Evridiki, Dancer
- Isaev Iulia, Soloist, Soprano
- Ivanov Emil, Soloist, Tenor
- Jaho Ermonela, Soloist, Soprano
- Jaia Gianni, Soloist, Tenor
- Janáček Leoš, Composer
- Jankovic Stanoje, Soloist, Baritone
- Jatić Branislav, Soloist, Bass
- Javara-Tsirigoti Popi (Kalliopi), Soloist, Mezzo-Soprano
- Jedlička Rudolf, Soloist, Baritone
- Jeffers Robinson, Librettist
- Jeicobsh Randhall, Soloist, Bass
- Jenbach Bela, Librettist
- Jerker Arvidson, Soloist, Bass
- Kirsten Johan
Johan F. Kirsten JFKirsten - privat1
Johan F. Kirsten JFKirsten - privat1
Johan F. Kirsten JFKirsten - privat1
Johan F. Kirsten JFKirsten - privat1
Κirsten Johan, Soloist, Bass-Baritone
- Job Enrico, Set Designer, Costume Designer
- Jobin Raoul
- Johann Strauss II, Composer
- Johannes Schütz, Set Designer
- Jones Ian, Light Designer
- Jordi Ismael, Soloist, Tenor
- Jovanović D. Miodrag, Soloist, Bass-baritone
- Kafantaris Stelios, Violinist, Conductor
- Kairi Iza, Dancer
- Kakavoulis Stephen, Actor, Director, Writer
- Kakkos Stathis, GNO Chorus member, Tenor
- Kalabakos Sergios, Soloist, Bass
- Kalafati-Petraki Despina, Soloist, Soprano
- Kalaitzakis Antonis, Soloist, Tenor
- Kalampokis Michalis, Actor
- Kaletsanos Ieronymos, Actor
- Kalinina Galina, Soloist, Soprano
- Kalman Emmerich, Composer
- Kalmandi Michele, Soloist, Baritone
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