William Marshall Smart FRSE PRAS LLD RIN (9 March 1889, Doune, Perthshire – 17 September 1975, Lancaster) was a 20th-century Scottish astronomer.
He was educated at the McLaren High School, in Callander, and graduated MA from the University of Glasgow in 1910 in mathematics and natural philosophy.
[1] He served in the Royal Navy during World War I as an instructor in navigation (RN College Greenwich 1915, HMS Emperor of India 1916–19) and then returned to Cambridge University in 1919 as a lecturer in mathematics and was appointed John Couch Adams Astronomer.
[2] During World War II, Smart published four volumes on sea and air navigation that became training manuals in the armed forces.
His proposers were Edward Hindle, William Michael Herbert Greaves, Edwin Arthur Baker and James Pickering Kendall.