John Maguire
John Maguire may refer to:
- John Maguire (archbishop of Glasgow), Scottish Roman Catholic prelate
- John Maguire (coadjutor archbishop of New York), American Roman Catholic prelate
- John Maguire (cricketer), Australian cricketer
- John Maguire (fighter), English mixed martial artist
- John Maguire (MP), Irish Member of Parliament
- John Maguire (senator), Irish senator
- John Maguire (rugby league), Australian former rugby league footballer
- John A. Maguire, American politician
- John D. Maguire, American college president
- John M. Maguire, CEO of Friendly's