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Niamh O’Sullivan


  • Irish mezzo-soprano Niamh O’Sullivan is praised for her 'bewitchingly beautiful, dark vibrant voice' (SüddeutscheZeitung). A 2023-2025 BBC New Generation Artist and former studio member of the Bayerische Staatsoper, O’Sullivan has quickly established herself as one of the most exciting mezzos today.

    The 2024/25 season sees O’Sullivan make a series of house and role debuts, including her house and role debut as Ino Semele for Théâtre des Champs-Elysées, and as Olga Eugene Onegin for Canadian Opera Company, Ino Semele in her return to the Royal Opera House, and role debuts as Ursule Béatrice et Bénédict and Maddalena Rigoletto for Irish National Opera.

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  • O’Sullivan continues as a 2023-2025 BBC New Generation Artist, with plans to include a gala concert with the BBC National Orchestra of Wales, and recitals at the Wigmore Hall with pianist Gary Beecher & St George’s, Bristol, alongside her recital work in the UK and at home in Ireland.

    In the 2023/24 season, O’Sullivan made her role debut as Wellgunde in a new Barrie Kosky production of Das Rheingold at the Royal Opera House, Wellgunde in Das Rheingold and Götterdämmerung and Mercédès Carmen for Opernhaus Zürich, and her role debut as Carmen La tragédie de Carmen at the Buxton Festival.

    Other recent plans have included Meg Page Falstaff at Opernhaus Zürich, Mercédès Carmen at English National Opera, Mirza Lalla-Roukh and Paulina Ein Wintermärchen with Wexford Festival Opera. O’Sullivan’s close association with Irish National Opera has seen her sing Charlotte Werther, Mercédès Carmen, Tisbe La Cenerentola, Third Maid Elektra, Asteria Bajazet and Alva in the world premiere of The First Child for the company.

    In concert, O’Sullivan has performed Elgar Sea Pictures at the Prinzregententheater for the Munich Festspiele, Mozart Requiem and Handel Messiah with the MüncherHofkantorei, the main role of Cain in Scarlatti Il primo omicidio with The Jakobsplatz Orchester cond. Daniel Grossmann, Cousser The Applause of Mount Parnassus at the Wigmore Hall with Ensemble Marsyas cond. Peter Whelan, The Messiah with the Ulster Orchestra, Second harlot in Handel Solomon with the English Concert and Mahler Symphony No.2 with the Irish National Symphony Orchestra cond. Anja Bihlmaier.

    As a member of the Opera Studio at the Bayerische Staatsoper from 2016 to 2018, O’Sullivan’s roles included Hänsel Hänsel und Gretel, Kate Pinkerton Madama Butterfly, the Secretary in Menotti The Consul, Flora La traviata, Barena Jenůfa and a concert performance of Der Rosenkavalier at Carnegie Hall conducted by Kirill Petrenko.

    O’Sullivan studied at the Royal Irish Academy of Music in Dublin and was a participant of the Académie du Festival d’Aix-en-Provence in 2023.

    2023/24 season - 422 words. Not to be altered without permission.


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'O’Sullivan is a singer very much on the rise at the moment, and this performance, certainly showed off her voice to good effect. Her light vibrato, wonderful vocal coloring, delicate coloratura and attractive phrasing all impressed.'

Opera Wire

'Singing Mirza, Irish mezzo-soprano Niamh O’Sullivan sang superbly, and confirmed her reputation as the possessor of one the loveliest voices of its type to be heard anywhere.'


Intermusica represents Niamh O’Sullivan worldwide.

Natasha Worsley
Senior Artist Manager, Vocal & Opera
+44 (0) 7870 979 794

Billie Allin
Assistant Artist Manager, Vocal & Opera
+44 20 7608 9903

All artists


HK Gruber


Tim Mead


Richard Egarr

Piano accompanist

Roger Vignoles


Jess Gillam


Avery Amereau