Doug Mountjoy (born 8 June 1942) is a retired Welsh snooker player. Mountjoy was a mainstay in the 'World's Top 16' during the 1970s and 1980s, and won the 'Masters' in 1977, the 'UK Championship' in 1978 and the 'Irish Masters' in 1979. He reached the 1981 World Championship final, where he was runner-up to Steve Davis. Mountjoy enjoyed an Indian summer in his 40s, winning back-to-back ranking events - the UK Championship and The Classic - during the 1988/89 season. His world ranking peaked at #5 in the 1990/91 season. In later years he was the coach to the United Arab Emirates snooker association between 1997 and 1999.

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