William Henry Ellison (November 1, 1945 – March 11, 2019) was an American football running back who played eight seasons in the National Football League for the Los Angeles Rams and the Kansas City Chiefs.

Sporting #33, he spent his first four seasons in the NFL as backup behind Larry Smith, before taking over as starting tailback in 1971.

[1][2] The NFL record at the time was held by Jim Brown, who ran 237 against the Los Angeles Rams in 1957.

Ellison was subsequently named NFL Offensive Player of the Week by the Associated Press.

This biographical article relating to an American football running back born in the 1940s is a stub.