Swedish-born soprano Malin Hartelius studied in Vienna and began her career as a member of the Vienna State Opera. From 1991 to 2012, she was a permanent member of the Zurich Opera House, where she built up a rich repertoire. Her roles include Adina from Donizetti's L’elisir d’amore, Leïla from Bizet's Les pêcheur du perles, Tatiana from Tchaikovsky's Eugene Onegin, among others. Her most important Mozart roles include Pamina from The Magic Flute, Constanza from The Abduction from the Seraglio, Countess Almaviva from The Marriage of Figaro and Elvira from Don Giovanni.

She has performed as a guest at the Aix-en-Provence and Salzburg Festivals and has performed in many European opera houses, including Frankfurt, Berlin, Paris, Munich, Stockholm and Vienna.

As a popular concert singer, she has worked with conductors such as Riccardo Chailly, William Christie, John Eliot Gardiner, Nikolaus Harnoncourt, Mariss Jansons, Franz Welser-Möst and with acclaimed orchestras such as the Vienna Philharmonic, Zurich Tonhalle Orchestra, Cleveland Orchestra, Bavarian Radio Symphony Orchestra, London Symphony Orchestra and Zurich Opera Orchestra.

A love of chamber music is central to Malin Hartelius' artistic work and she performs regularly with the Gringolts Quartet, among others. In addition to her work as a singer, she also teaches at the Bern University of Arts, where she is a professor of voice and regularly gives master classes.

Her work is documented on numerous CDs and DVDs.

In January 2010, Malin Hartelius was awarded the Academic Order "Litteris et Artibus" by the King of Sweden.