Michael William "Mick" Gallagher (born 29 October 1945 in Fenham, Newcastle upon Tyne, England) is a British Hammond organ player and best known as a member of Ian Dury and the Blockheads and for his contributions to albums by the Clash. He has also written music for films such as Extremes (1971) and After Midnight (1990), also the Broadway play Serious Money (1987).