John Monaghan

John Monaghan may refer to:

• John Monaghan, Author, johnmonaghan.com, NYPD Captain
• John R. Monaghan, United States Navy officer
• John James Joseph Monaghan, American prelate of the Roman Catholic Church
• Rinty Monaghan (John Joseph Monaghan), flyweight boxer from Belfast
• Jack Monaghan (1921–2022), New Zealand amateur wrestler
• John Monaghan (businessman), New Zealand dairy executive with Fonterra

See also

• John Monahan (disambiguation)