Michael John Kells Fleetwood (born 24 June 1947) is a British musician, songwriter and actor. He is the drummer, co-founder, and leader of the rock band Fleetwood Mac. Fleetwood, whose surname was merged with that of the group's bassist John "Mac" McVie (the only two members to appear on every studio album during the band's run) to form the name of the band, was inducted into the Rock and Roll Hall of Fame with Fleetwood Mac in 1998.

Born in Redruth, Cornwall, Fleetwood lived in Egypt and Norway for much of his childhood. Choosing to follow his musical interests, Fleetwood travelled to London at the age of 15, eventually forming the first incarnation of Fleetwood Mac with Peter Green, Jeremy Spencer and Bob Brunning. After several album releases and line-up changes, the group moved to the United States in 1974. Fleetwood then invited Lindsey Buckingham and Stevie Nicks to join. Buckingham and Nicks contributed to much of Fleetwood Mac's later commercial success, including the celebrated album Rumours, while Fleetwood's own determination to keep the band together was essential to the band's longevity. Fleetwood has also enjoyed a solo career, published written works, and flirted briefly with acting.