Derrick Capel Farr (7 February 1912 – 21 March 1986) was an English actor who appeared regularly in British films and television from 1938 until his death in 1986.

His more famous roles include Group Captain John Whitworth in The Dam Busters.

In 1952 he appeared in the West End in the thriller Murder Mistaken by Janet Green.

In the early 1980s he played 16 roles in The War of the Roses cycle in the BBC Television Shakespeare series.

[5] His second marriage was in 1947 to actress Muriel Pavlow, whom he met in 1941 while filming Quiet Wedding, and again on the set of The Shop at Sly Corner (1947).