- 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
- Kalo Kali, Dancer, Actress
- Kalogeras Spyros, Soloist, Baritone
- Kalogiannis Michalis, Soloist, Bass
- Κalogirou Antonia, Soloist, Soprano
- Kalomiris Manolis, Composer and conductor
- Kaltsou Stella, Lighting Designer
- Kalyvas Yannis, Soloist, Tenor
- Kamata Omar, Soloist, Baritone
- Kampanis Jannis, Soloist, Tenor
- Kambysis Yannis, Writer, Poet, Playwriter, Translator
- Kampakou Dialekti, Soloist, Soprano
- Kampouraki Stavroula, Principal Dancer of the GNO Ballet
- Kanaki Rena (Irini), Soloist, Soprano
- Kanari Galicia, Soloist, Soprano
- Kanaris Yorgos, Soloist, Baritone
- Kanati Taxiarchoula, Soloist, Mezzo-soprano
- Kanellos Vrassidas, GNO Chorus Member, Tenor
- Kapetanaki Reggina, Choreographer
- Kapetanakis E., GNO Chorus member, Tenor
- Kapetanakou Sophia, Soloist, Mezzo-soprano
- Kapetanea Linda, Dancer, Choreographer
- Kapetas Nikos, Soloist, Bass
- Kappou Zoi, Soloist, Soprano
- Karabelas Charalambos, Dancer
- Karachalios Tasos, Choreographer, Dancer
- Karadounia Anna, Soloist,Soprano
- Karafyllis Simos, Set and Costume Designer
- Karagiannaki Maria, Soloist, Mezzo-soprano
- Karaianni Irini, Soloist, Soprano
- Karagiannopoulou Anna, Soloist
- Karagiaouris Nikos, Soloist, Baritone
- Karagiorga Valia, Actress, Singer
- Karagouni Julie, Soloist, Soprano
- karahissaridis Yannis, Director
- Karakantas Georgios, Director
- Karakosta Efi, Choreographer
- Karalivanos Totis (Panagiotis), Conductor
- Karamalegou Foula, GNO Chorus Member, Soprano
- Karamanidis Triantafyllos, Dancer
- Karamanoglou Ekaterini, GNO Chorus Member, Soprano
- Karamanos Dimitris, Actor
- Karamanou Irini, Dancer
- Karantinos Sokratis, Director
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