Lieutenant Theodore David Hyamson was an English officer of the British Army who died during the Second World War.
He was born on 23 May 1914, in Edmonton, the son of civil servant Albert Montefiore and Marie Hyamson (née Levy). Educated at St George's School, Jerusalem, and Exeter School, Hyamson apprenticed as an engineer before graduating with a B.Sc, with honours, and a Whitworth scholarship. He subsequently travelled to the United States, but returned after six months on the outbreak of war to enlist in the Royal Engineers. He obtained a commission in 1940, dated 11 May.
Hyamson died on 15 February 1942, in Singapore, reportedly succumbing to wounds the day of the garrison's capitulation to Japan. He had been serving with the Royal Bombay Sappers and Miners, attached from the 45th Army Troops Company, RE, and his obituary noted that he had been promoted to captain a few days before his death. His older brother, Philipp, a corporal in the RAFVR, died in August 1944.
He was buried in a mass grave and is thus commemorated by the Singapore Civil Hospital Grave Memorial.
- The Times (50459), Col A, p. 1: "In Memoriam". 23 May 1946.
- The Times (49499), Col E, p. 6: "Fallen Officers". 20 March 1943.
- The London Gazette (34851), p. 2952, london-gazette.co.uk. 14 May 1940. Retrieved 5 August 2013.
- Hyamson, Theodore David, cwgc.org. Retrieved 5 August 2013.