Hugh Watt, Australian-New Zealand engineer and politician, Prime Minister of New Zealand (d. 1980)

Hugh Watt (19 March 1912 – 4 February 1980) was a New Zealand politician who was a Labour member of Parliament and the acting prime minister of New Zealand between 31 August to 6 September 1974, following the death of Prime Minister Norman Kirk. He had been the fifth deputy prime minister of New Zealand since 8 December 1972. Watt later served as High Commissioner to the United Kingdom.