Doug Mountjoy (8 June 1942 – 14 February 2021) was a Welsh snooker player that remained within the top 16 of the world rankings for 11 consecutive years during the 1970s-80s. He began his professional snooker career by taking the 1977 Masters, which he entered as a reserve player. He won both the 1978 UK Championship and the 1979 Irish Masters. Mountjoy reached the final of the 1981 World Snooker Championship where he was defeated by Steve Davis. He was also runner-up at the 1985 Masters losing to Cliff Thorburn.