Geoffrey Dyson Palmer, OBE (4 June 1927 - 5 November 2020) was an English actor known for his roles in British television sitcoms playing Jimmy Anderson in The Fall and Rise of Reginald Perrin (1976–79), Ben Parkinson in Butterflies (1978–1983) and Lionel Hardcastle in As Time Goes By (1992–2005). His film appearances include A Fish Called Wanda (1988), The Madness of King George (1994), Mrs. Brown (1997), and Tomorrow Never Dies (1997).

Geoffrey Dyson Palmer was born on 4 June 1927 in North Finchley, Middlesex. He was the son of Frederick Charles Palmer, who was a chartered surveyor, and Norah Gwendolen (née Robins). He attended Highgate School from September 1939 to December 1945. He served as a corporal instructor in small arms and field training in the Royal Marines during his national service from 1946 to 1948, following which he briefly worked as an unpaid trainee assistant stage manager.