Peter Harper may refer to:
Peter Harper (American artist) (born 1974), American sculptor, singer and songwriter Peter Harper (alternative technologist), originator of the term 'Alternative Technology' Peter Harper (cricketer) (born 1977), Australian cricketer Sir Peter Harper (geneticist) (1939–2021), Welsh geneticist Peter Harper (musician) (born 1968), Australian-American musician, singer and songwriter Peter Harper (racing driver) (1921–2003), British racing driver