William Blan (2 May 1922 – 13 April 2008) was an English professional rugby league footballer who played in the 1940s and 1950s. He played at representative level for Great Britain, England and Lancashire, and at club level for Wigan, Leeds (two spells), St. Helens and Rochdale Hornets, as a second-row or loose forward, i.e. number 11 or 12, or, 13, during the era of contested scrums.