Michael John Kells "Mick" Fleetwood (born June 24, 1947) is a British-born musician best known for his role as the drummer with the blues/rock and roll band Fleetwood Mac. His name, combined with that of John McVie was the inspiration for the name of the originally Peter Green-led Fleetwood Mac.

Aside from his work as a drummer, he also helped form the different incarnations of his band Fleetwood Mac, and is the sole member to stay with the band through its ever-changing lineup. In 1974, he met and invited Lindsey Buckingham and Stevie Nicks to join Fleetwood Mac. Although Buckingham and Nicks deserve credit for contributing to much of Fleetwood Mac's later commercial success, Fleetwood's determination to keep the band together was essential to Fleetwood Mac's longevity as a band and their lasting international success.

Fleetwood was born in Redruth, Cornwall, UK, to John Joseph Kells and Bridget Maureen (née Brereton) Fleetwood. His elder sister, the late Susan Fleetwood, was an actress. In early childhood he and his family followed his father, a Royal Air Force fighter pilot, to Egypt. After about six years they moved to Norway where his father was posted. He attended school there and acquired fluency in the Norwegian language. According to his autobiography, Fleetwood had an extremely difficult and trying time academically at the English boarding schools he attended, including Kings School, Sherborne Park, Glos. He performed poorly on exams which he attributes to his persistent inability to commit facts to memory. He dropped out of school aged 15, and, in 1963, moved to London to pursue a career as a drummer.