William Watson (birth unknown – death unknown) was an English professional rugby league footballer who played in the 1920s and 1930s, and coached in the 1940s. He played at representative level for England, Rugby League XIII and Yorkshire, and at club level for Keighley and Huddersfield, as a prop, hooker, or loose forward, i.e. number 8 or 10, 9, or, 13, during the era of contested scrums, and coached at club level for Keighley (A-Team assisted by Norman Foster).