Sir Ernest Lucas Guest (20 August 1882 – 20 September 1972) was a Rhodesian politician, lawyer and soldier. He held senior ministerial positions in the government, most notably as Minister for Air during the Second World War. He married Edith May Jones and had two daughters and twin sons, both of whom were killed in action during the Second World War. At his death, both the High Court and Parliament paid public tributes to him. His continuing legacy is most evident in the Kariba Dam, a project that went ahead with his active support.