James Walter McLeod FRS FRSE LLD OBE (1887–1978) was a Scottish physician and bacteriologist.
He was born on 2 January 1887 in Dumbarton, the son of John McLeod, an architect, and his wife Lilias Symington McClymont.
In World War I was commissioned into the Royal Army Medical Corps, rising to captain and commanding officer of the 8th Mobile Laboratory.
His proposers were John Gaddum, Richard Swain, James Pickering Kendall, and George Romanes.
[3] In 1963 he took on a role at Edinburgh's Western General Hospital, finally retiring in 1973, aged 86.