Peter Murphy may refer to:
Arts and entertainment
Peter Murphy (broadcaster) (1923–2011), Irish radio and television broadcaster
Peter Murphy (musician) (born 1957), British musician with the band Bauhaus
Peter Murphy (artist) (born 1959), English Stuckist artist
Politics and law
Peter P. Murphy (1801–1880), American politician, New York state senator
Peter Murphy (businessman) (1853–1925), Australian politician
Peter J. Murphy (1860–1916), American politician, Wisconsin state assemblyman
Pete Murphy (1872–1946), American politician, North Carolina state representative and college football player
Peter Murphy (Maryland politician) (born 1949), American politician, member of the Maryland House of Delegates
Peter Murphy (JAG) (fl. 2000s), American lawyer and officer in the United States Marine Corps
Sports
Peter Murphy (footballer, born 1922) (1922–1975), English footballer with Coventry City, Tottenham Hotspur and Birmingham City
Peter Murphy (rugby league) (born 1941), Scottish rugby league footballer
Peter Murphy (hurler) (born 1961), Irish hurler
Peter Murphy (rower) (born 1967), Australian Olympic rower
Peter Murphy (footballer, born 1980), Irish international footballer; current Queen of the South manager
Peter Murphy (footballer, born 1990), English footballer with Wycombe Wanderers
Others
Peter William Murphy (died 1976), New Zealand police officer
Peter Murphy (executive) (born 1962), American businessman