Sidney Smith (26 March 1908 – 26 June 1990) was a professional billiards and snooker player from the 1930s to the 1950s.
He was born in Killamarsh, Derbyshire, England.He was the first player to make a total clearance in snooker competition, a break of 133 on 11 December 1936 in the Daily Mail Gold Cup.Smith's most notable tournament wins were the 1948 United Kingdom Professional Billiards Championship (beating John Barrie 7000-6428) and the 1951/1952 News of the World Snooker Tournament.Smith was the runner-up to Joe Davis in the World Snooker Championships of 1938 (having beaten Joe's brother Fred 18–13 in the semi-final) and 1939, and he was a semi-finalist on four occasions (1937, 1940, 1947, 1949).
Smith was the runner-up to Alec Brown in the 1938/1939 Daily Mail Gold Cup and later runner-up to Joe Davis in the 1949/50 News of the World Tournament and the 1950 Sporting Record Masters' Snooker Tournament.
Smith made three 1000+ billiard breaks in his career, with his highest being a break of 1292.Smith died in 1990 aged 82.