Peter Larkin may refer to:
Peter Anthony Larkin (1924–1996), Canadian fisheries scientist Peter Charles Larkin (1855–1930), Canadian entrepreneur Peter J. Larkin (born 1953), member of the Massachusetts House of Representatives from 1991 to 2005 Peter Larkin (production designer) (1926–2019), American theatre stage designer
See also Peter Larkins (born 1954), doctor