James Latham McDiarmid Clyde, Lord Clyde, PC (30 October 1898 – 30 June 1975) was a Scottish Unionist politician and judge.

Born on 30 October 1898 at Heriot Row, Edinburgh, Clyde was the eldest son of Anna Margaret McDiarmid (d. 1956), (daughter of Professor Peter Wallwork Latham of Cambridge) and James Avon Clyde, Lord Clyde.

[1] He was educated at Edinburgh Academy, Trinity College, Oxford and the University of Edinburgh, and was admitted as an advocate in 1924[1] and as a King's Counsel in 1936.

[2] He was an unsuccessful parliamentary candidate for Midlothian South and Peebles at the 1945 general election,[3] and was elected as Member of Parliament for Edinburgh North at the 1950 election,[4] holding the seat until December 1954.

His son, James Clyde, Baron Clyde became a member of the Court of Session and latterly a Law Lord.