Matthieu Chedid (born 21 December 1971) is a French multi-instrumentalist and singer-songwriter.

Chedid began his career as a session musician playing both acoustic and electric guitar. In the late 1990s, he rose to fame as a singer-songwriter and musician under the alias M (often stylized as -M-), blending Nouvelle Chanson, electronic and rock music. In studio, he experiments with various instruments and electronic music, while on tour as -M- he mostly plays the guitar, and is known for his eccentric outfits and dramatic live performances, sometimes including special effects.