Other
- John Murphy (priest) (1753–1798), one of the leaders during the Irish Rebellion of 1798
- John Murphy (branding consultant) (born 1946), founder of Interbrand
- John Murphy (composer) (born 1965), British composer of film scores
- John Murphy (contractor) (1913–2009), British building contractor
- John Murphy (technical analyst), financial market analyst
- John Murphy (musician) (born 1959), sometimes credited as "Jonh Murphy", Australian drummer and multi-instrument musician
- John Murphy (loyalist) (1950–1998), loyalist from Belfast, Northern Ireland
- John Murphy (playwright) (1929–1998), Irish dramatist, author of The Country Boy
- John Alphonsus Murphy (1881–1935), American Medal of Honor recipient
- John Benjamin Murphy (1857–1916), American surgeon, president of the American Medical Association, 1911
- John E. Murphy (1869–1941), United States Navy sailor and Medal of Honor recipient during the Spanish-American War
- John Francis Murphy (1853–1921), American landscape painter
- Kim Deal (born 1961), musician sometimes credited as "Mrs. John Murphy"
- John F. Murphy (JAG), appointed fifth Chief Prosecutor of the Guantanamo Military Commissions
- John F. Murphy (law professor) (born 1937), law professor at Villanova University
- John Murphy (Saint Patrick's Battalion), Irish soldier
- John Murphy (fiddle player) (1875–1955), Irish fiddle player
- John Aloysius Murphy (1905–1995), Roman Catholic archbishop
- John Tuohill Murphy (1854–1926), Irish Roman Catholic priest
- John Cullen Murphy (1919–2004), American illustrator
- John H. Murphy (1913–2007), American newspaperman
- John McLeod Murphy (1827–1871), officer in the United States Navy during the American Civil War
- John James Murphy (1796–1883), Irish priest
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