Mark Kennedy is an Australian musician who has been the drummer for several artists including Spectrum (1969–70), Doug Parkinson in Focus (1971), Leo de Castro (1971–73), Ayers Rock (1973–76), Marcia Hines (1976–83), Men at Work (1985), Renée Geyer and Jimmy Barnes (2005).

Ayers Rock were an Australian rock band which formed in August 1973. Ray Burton, Mark Kennedy (drums), and Duncan McGuire (bass), members of Leo de Castro and Friends, left to form the eponymous trio of Burton, McGuire & Kennedy. They added a guitarist, Jimmy Doyle, changed their name to Ayers Rock and invited Col Loughnan to join. The group signed with independent label Mushroom Records in December 1973. Burton left the following March, and he was replaced by Chris Brown. With live appearances, coverage in print media and word of mouth, the group had a high national profile despite little radio airplay, and journalists praised their musicianship, music, and live energy.