Sinclair Beiles (b. Kampala, Uganda, 1930 - 2000, Johannesburg) was a South African beat poet and editor for Maurice Girodias at the Olympia Press in Paris. He developed along with William S. Burroughs and Brion Gysin the cut-up technique of writing poetry and literature. Beiles wandered through Europe, including a spell in London and settled in the Greek islands during the 1970s. He fought frequent bouts of depression, mental illness and drug addiction. He was married to the South African poet and artist .