Sir John Currie Gunn CBE, FRSE (September 13, 1916 - July 26, 2002) was an influential Scottish scientist.
Gunn was born in Glasgow and educated at the University of Glasgow, and St John's College, Cambridge.
During the Second World War, Gunn was part of a team of scientists and engineers led by Harrie Massey based first at Teddington, and then at the Admiralty Mining Establishment attached to HMS Vernon at Portsmouth. He was involved in researching counter measures against German magnetic mines and the development of a range of British non-contact mines.
Gunn was appointed to the Cargill Chair of Natural Philosophy at Glasgow University in 1949, a post he held until retirement in 1982. He was also elected a Fellow of the Royal Society of Edinburgh in 1959.