Marilyn Mazur (born January 18, 1955) is an American-born Danish percussionist. Since 1975, she has worked as a percussionist with various groups, among them Six Winds with Alex Riel. Mazur is primarily an autodidact, but she has a degree in percussion from the Royal Danish Academy of Music.

Mazur was born in New York City in 1955, from Polish and African-American parents, who moved with her to Denmark at age 6. She learned to play the piano, but when she was 19, she took up drumming, inspired by Al Foster, Airto Moreira, and Alex Riel. She started her first band in 1973, Zirenes. In 1978, she formed Primi, an all-woman theatre band. In 1985, she was asked to participate in the Palle Mikkelborg project that would become the Miles Davis album Aura, and soon after she went on the road with Miles Davis. Afterward, she played with Gil Evans, Wayne Shorter, Jan Garbarek, and Makiko Hirabayashi.