- Alvarez Rafael, Soloist, Tenor
- Amato Janet, Dancer, Choreographer
- Amaxopoulou Galatia, Soloist, Soprano
- Amiradaki Voula, Soloist, Soprano
- Amonov Avgust, Soloist, Tenor
- Amparán Belén, Soloist, Mezzo-Soprano
- Amphilochiadou Εkaterini, GNO Chorus Member, Soprano
- Amvrazis Christos, GNO Chorus Member, Bass
- Anastasiadou A., Soloist, Soprano
- Anastasiou Vassilis, Director
- Andjaparidze Zurab, Soloist, Tenor
- Andrade Suzanne, Director
- Andreadou Efterpi, Soloist, Mezzo-Soprano
- Andrianos Haris, Soloist, Baritone
- Androulis Theodoros, Soloist, Baritone
- Androutsopoulos Lysimachos, Conductor
- Anelli Angelo, Librettist
- Anemogiannis Georgios, Set Designer, Costume Designer, Decorator
- Aneroussou Cleopatra, Dancer
- Angeletti Raffaella, Soloist, Soprano
- Angelopoulos Marios, Set and Costume Designer
- Angelopoulou Evi, Dancer
- Anile Francesco, Soloist, Tenor
- Anoyanakis Fivos, Musicologist, Music Critic
- Antonelos Gabriel, Soloist, Baritone
- Antonelou Fanie, Soloist, Soprano
- Antoņenko Aleksandrs, Soloist, Tenor
- Antonioli Doro (Isidoro), Soloist, Tenor
- Antoniou Theodore, Composer
- Antoniou Yannis, Member of GNO Children's Chorus
- Antoniozzi Alfonso, Soloist, Bass, Director
- Antypas Leonidas, GNO Chorus Member, Bass
- Apergi M., Soloist, Soprano
- Apergis Patricia, Choreographer
- Apiranthitou Zoi, GNO Chorus Member, Mezzo-Soprano
- Apostolaki Ermina, Costume Designer
- Apostolaki Katy (Katerina), Soloist, Mezzo-Soprano
- Apostolellis Yannis, Lighting Designer
- Apostolopoulou Stelina, Soloist, Soprano
- Apostolou T., Soloist, Tenor
- Apostolou Tassos, Soloist, Bass
- Aragall Giacomo, Soloist, Tenor
- Arapis Martha, Soloist, Soprano
- Arapian Armand, Soloist, Baritone
- Aravidis George, Conductor
- Archonti Athina, GNO Chorus Member, Mezzo-Soprano
- Ardant Fanny, Actress, Director
- Argenti Zenia, Soloist, Soprano
- Argiris Aris, Soloist, Baritone
- Argyrakis Minos, Painter, Cartoonist, Set Designer
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