Martin Fröst (born 14 December 1970) is a Swedish clarinetist and conductor. As a clarinetist, he performs internationally and is considered one of the most renowned instrumental soloists ever.

He is the first clarinetist to be awarded one of classical music's biggest honours, the Léonie Sonning Music Prize. other recipients include Igor Stravinsky, Leonard Bernstein, Miles Davis, Daniel Barenboim and Gidon Kremer. He is also the only wind player ever to have been appointed Artist in Residence with the Amsterdam's Concertgebouworkest (for the 2022/23 season). He was appointed principal conductor of the Swedish Chamber Orchestra in 2019.

Fröst has performed as soloist with most of the leading orchestras of the world, including the New York Philharmonic, Concertgebouworkest, London Symphony Orchestra, Gewandhausorchester Leipzig, Los Angeles Philharmonic, Munich Philharmonic, the Elbphilharmonie Orchestra, NHK Symphony Orchestra, Vienna Symphony, Tonhalle-Orchester Zürich and Orchestre de Paris.

Fröst 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.