Marieke de Koker (she/they) is a South African multi-disciplinary artist based in New York City.

In the 2024/25 season Marieke's operatic debuts include the roles of ​Maddalena in Rigoletto and Dorothée in The Anonymous Lover with Finger Lakes Opera. She performed as Pilate in Jesus Christ Superstar with Utopia Opera. Marieke performs in concert at the SpeakUp! Festival in Brooklyn with Opera on Tap, Out Loud with Finger Lakes Opera in Rochester, and at the Eco-Arts Festival on Governors Island with the Artichoke Dance Company. 

Other recent appearances include the title role of Iolanthe, Susan (The Marriage Counselor), Béatrice (Béatrice et Bénédict), Liza Elliott (Lady in the Dark) and Cloud in the world premiere of Iceland. Marieke has performed in recitals and world premieres with WQXR radio, Brooklyn Theatre TV, Gauteng Philharmonic Orchestra, RSG Radio, Johannesburg Opera, the Mosaic Composers Collective, and many more. She has received awards from the International Opera Awards Foundation, SOI Cedolins International Opera Competition, Hal Leonard Vocal Competition, Nightingale Opera Theater Competition, among others.

​As a composer and interdisciplinary artist, Marieke has completed commissions and residencies with the Artichoke Dance Company's Eco-arts Ambassadors, White Snake Projects's Sing Out Strong, the International Contemporary Ensemble's Ensemble Evolution and the Windybrow Arts Center's Aluta Continua series.