- Margaritis Alkiviadis, Journaist, Educator
- Margaritis Fragiscos, Musician, Violonist
- Mariani Lorenzo, Director
- Marini Konstantina
- Marinofsky Dmitri, Soloist, Baritone
- Mariotti Alfredo, Soloist, Bass
- Marketou-Voudouri Maria, Soloist, Mezzo-Soprano
- Markopoulou-Zaharopoulou Mata, Soloist, Soprano
- Markoulaki Maka
- Marković Branko
Branko, Dancer, Choreographer, Ethnomusicologist
- Maropoulos Pavlos, GNO Chorus Member, Bass
- Marou Katy, GNO Chorus Member, Soprano
- Marri Franco
- Marrucci Enrico, Soloist, Baritone
- Marsellos Evangelos, Soloist, Bass
- Martaki Mimika, Dancer
- André Martin, Conductor
- Martina Dike
- Martinengos Elisavetios, Librettist
- Martinis Konstantinos, Ballet Dancer
- Martinucci Nicola, Soloist, Tenor
- Martsoni-Sakonaki, E., Choreographer
- Marzocchi Ricordano, Librettist
- Mascagni Pietro, Composer
- Mascha Melina, Lighting Designer
- Masourakis Nikos, Soloist, Baritone
- Massenet Jules, Composer
- Massine Lorca, Dancer, Choreographer
- Massman Peter, Director
- Mastorakis Nikos
- Mastromarino Alberto, Soloist, Baritone
- Mastrosava Rosy, Chorus Master
- Mataraga Elvira, Soloist, Soprano
- Matheoudaki Alexandra, Soloist, Soprano
- Matsoukis Dimitris, Director
- Mattheakakis George, Soloist, Baritone
- Matthies Eberhard, Set Designer, Painter, Graphic Designer
- Mauro Ermanno, Soloist, Tenor
- Mavrakis Lambros, Soloist, Tenor
- Mavridou A., Soloist, Soprano
- Mavrikios Dimitris, Director
- Mavroeidi A., Soloist, Mezzo-Soprano
- Mavrogenis Konstantinos, Soloist, Baritone
- Mavroidi Martha, Musician, Singer, Composer
- Mavrommati Maria, Soloist, Soprano
- Mavrommati Z., Soloist
- Mayer Thomas J., Soloist, Baritone
- Mazurók Yuri
Yuri, Soloist, Baritone
- Mazzaria Lucia
- Mazzolà Caterino, Librettist
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