Thomas Graeme Nelson Haldane, known as Graeme Haldane, (14 December 1897 - 24 June 1981) was a Scottish engineer. He was the son of Sir William Haldane and his wife Edith Nelson. He was a nephew of Elizabeth Haldane, Richard Burdon Haldane, 1st Viscount Haldane and John Scott Haldane. He was educated at Royal Naval College, Osborne and Royal Naval College, Dartmouth and in the First World War served in the Royal Navy on HM Ships Doris Valient and Tiger and was at the Battle of Jutland. In 1919 he went to Trinity College, Cambridge and worked at the Cavendish Laboratory under Rutherford. He helped establish the National Grid. In 1928 he joined Merz and McLellan engineering firm, and in 1941 became a partner. In 1948 he was President of the Institution of Electrical Engineers and won its James Watt Gold Medal in 1953. He retired in 1972. He had a son Richard W. Haldane.
