- Sokos Spyros, Soloist, Bass-Baritone
- Solari Dario, Soloist, Baritone
- Solera Temistocle, Librettist
- Solomonidi-Balanou Elli, Cartoonist, Set Designer, Costume Designer
- Solomos Alexis, Director
- Solomos Thanasis, Dancer
- Somma Antonio, Librettist
- Sonnleitner Jozeph von, Librettist
- Sotiriou Martha, Soloist, Mezzo-soprano
- Sotiropoulos Nikos, Lighting designer
- Sotiriou Eleni, GNO Chorus Member, Mezzo-soprano
- Souglakou Julia, Soloist, Soprano
- Souglides George, Set Designer, Costume Designer
- Souliotis Elena, Soloist, Soprano
- Soulis Stathis, Conductor
- Sourbis Dionysios, Soloist, Baritone
- Sozdateleva Svetlana, Soloist, Soprano
- Spanaki Loukia, Soloist, Soprano
- Spanatis Nikos, Soloist, Countertenor
- Spanos Nikos, Soloist, Countertenor
- Sparemblek Milco, Choreographer
- Spathari I.
- Spathis Theodoros, Composer
- Speliopoulos Peter, Costume Designer
- Spiliakou Th., Soloist, Soprano
- Spiliotis G., Soloist, Tenor
- Spinoulas Lefteris, Soloist, Tenor, Director, Conductor
- Spitadi Chrysanthi, Soloist, Mezzo-Soprano
- Spotti Marco, Soloist, Bass
- Stafeta Dimitra, Soloist, Soprano
- Stafeta Konstantina, Dancer
- Stafetas Yorgos, Soloist, Tenor
- Stamatakis Yannis, GNO Chorus Member, Baritone
- Stamatiou B., Costume Designer
- Stamboglis Christophoros, Soloist, Bass
- Stamidou Eleni, Soloist, Soprano
- Stamos(Stamatopoulou) Lela(Eleni), Soloist, Mezzo-Soprano
- Stanisci Rachele, Soloist, Soprano
- Stasinopoulos Michael, High Justice, University Scholar
- Stathakopoulos M., Soloist, Baritone
- Statsenko Boris, Soloist, Baritone
- Stavridis Konstantinos, Soloist, Tenor
- Stavropoulos Kostas, Soloist, Bass
- Stavropoulou Elena, Set designer
- Stavroskis A., Soloist, Tenor
- Stavrou Thei, GNO Chorus Member, Mezzo-Soprano
- Stavru Cornel, Soloist, Tenor
- Steber Eleanor, Soloist, Soprano
- Stefanellis Yannis, Set Designer, Costume Designer
- Stefanidis Totis (Theodoros), Baritone, Composer
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