Martin Fröst (born 14 December 1970) is a Swedish clarinetist and conductor. He is principal conductor of the Swedish Chamber Orchestra. He is also a developer of multimedia projects with music, choreography and light design, in which he appears as a clarinetist, conductor, copywriter and "master of the ceremony". He crosses musical and medial borders, willing to experiment.

Fröst's work in contemporary music includes collaborations with Anders Hillborg, Krzysztof Penderecki, Kalevi Aho, Rolf Martinsson, Bent Sørensen, Victoria Borisova-Ollas, Karin Rehnqvist and Sven-David Sandström. In May 2014, he received the Léonie Sonning Music Prize, the first clarinetist so honoured.