Hugh Keays-Byrne (May 18, 1947 – December 2, 2020) was a British-Australian actor and film director. A former member of the Royal Shakespeare Company, he was best known for playing the main antagonist in two films from the Mad Max franchise: Toecutter in Mad Max (1979), and Immortan Joe in Mad Max: Fury Road (2015). He also played Toad in the 1974 biker film Stone, and Grunchlk on the science fiction series Farscape.

Keays-Byrne was born in Srinagar, in the state of Jammu and Kashmir (part of the British Raj then, India now) to British parents; his family returned to Britain when India was partitioned. He began his career as a stage actor.