James Ley

• James Ley, 1st Earl of Marlborough, Lord Chief Justice of the King's Bench in Ireland and then in England; English MP and Lord High Treasurer
• James Ley, 3rd Earl of Marlborough, British peer
• James Ley (dramatist), Scottish playwright and screenwriter
• James Ley (literary critic), Australian literary critic and essayist
• James Clement Ley, Royal Navy officer