Lancelot Osbert "Lance" Sleeman (21 March 1885 – 20 December 1968) was an Australian rules footballer who played with Melbourne and University in the Victorian Football League (VFL).
Originally from Wonthaggi, Sleeman was educated at Scotch College, but he never played school football for Scotch.
After further education at Melbourne University where he studied medicine, Sleeman became a doctor.