Leonard Rossiter (21 October 1926 – 5 October 1984) was an English actor. He had a long career in the theatre but achieved his highest profile for his television comedy roles starring as Rupert Rigsby in the ITV series Rising Damp from 1974 to 1978, and Reginald Perrin in the BBC's The Fall and Rise of Reginald Perrin from 1976 to 1979.