Sidney Henry Haughton FRS (7 May 1888 – 24 May 1982) was an English-born South African paleontologist and geologist best known for his description of the sauropodomorph dinosaur Melanorosaurus in 1924, and his work on the geology of the Witwatersrand. Haughton was born on 7 May 1888 in Bethnal Green, London. He was the eldest of three children born to Henry Charles Haughton and Alice Aves. During World War I, Haughton enlisted with the Royal Army Medical Corps, was posted to Egypt and then India, and picked up malaria, leading to his discharge from the army.