James Wemyss
James Wemyss may refer to:
- James Wemyss, Lord Burntisland, husband of Margaret Wemyss, 3rd Countess of Wemyss
- James Wemyss, 5th Earl of Wemyss, grandson of the preceding, Scottish peer
- James Wemyss, son of the preceding, Scottish MP
- James Erskine Wemyss, grandson of the preceding, Scottish admiral and MP
- James Hay Erskine Wemyss, son of the preceding, Scottish MP
- James Wemyss , Member of Parliament in Nelson, New Zealand
- James Wemyss , major during American Revolutionary War at Battle of Fishdam Ford