Lloyd Mawson Pearson (13 December 1897 – 2 June 1966) was an English actor, who appeared mostly in character roles on stage and screen. He created the roles of Rat in Toad of Toad Hall in 1929 and Alderman Helliwell in the West End production of J. B. Priestley's When We Are Married in 1938, a role he reprised in the film version in 1943.