Albert Septimus "Sep" Aspinall (7 December 1907 – c. second ¼ 1976) was an English professional rugby league footballer who played in the 1920s and 1930s. He played at club level for York, Leeds, Huddersfield and Featherstone Rovers (Heritage No. 161), as a centre, second-row, or loose forward, i.e. number 4 or 5, 11 or 12, or 13, during the era of contested scrums.