John Macartney
John Macartney may refer to:
- John Ellison-Macartney, Irish barrister and politician
- John Arthur Macartney, British colonist, squatter and grazier
- Sir John Macartney, 1st Baronet, MP for Naas and Fore in Parliament of Ireland
- Sir John Macartney, 3rd Baronet, of the Macartney baronets
- Sir John Barrington Macartney, 6th Baronet, of the Macartney baronets
- Sir John Ralph Macartney, 7th Baronet, of the Macartney baronets