Marius van Altena, born Marius Hendrikus Schweppe (born 10 October 1938 in Amsterdam) is a Dutch tenor. He was one of the pioneers of historically informed performance of Baroque and Renaissance music. He has also sung Baroque opera, worked as conductor and as an academic teacher.
Marius van Altena graduated Show more... from the Conservatorium van Amsterdam. In 1973, he was the Evangelist in the first historically informed performance in the Netherlands of Bach's St Matthew Passion. Johan van der Meer conducted the Groningse Bachvereniging, the Vox Christi was Max van Egmond, the other soloists were three boys of the Tölzer Knabenchor, René Jacobs, Harry Geraerts, Michiel ten Houte de Lange, Frits van Erven Dorens and Harry van der Kamp. Ton Koopman and Bob van Asperen played the organs. The performance was recorded live. With van der Meer he performed and recorded Bach's Mass in B minor in 1975 at the Holland Festival, the orchestra was La Petite Bande with concert master Sigiswald Kuijken). In 1969 van der Meer conducted Bach's St John Passion in Groningen.
Van Altena sang the tenor part in several Bach cantatas in the project to record all sacred cantatas, conducted by Gustav Leonhardt,