Gary Siddall (May 1957), also known by thenickname of "Big Sid", is an English former professional rugby league footballer who played in the 1970s and 1980s. He played at club level for Featherstone Rovers (Heritage № 551), as a prop, or second-row, i.e. number 8 or 10, or, 11 or 12, during the era of contested scrums.