Peter Johnston may refer to:
Sport Peter Johnston (footballer, born 1957), former Australian rules footballer for Melbourne and Geelong Peter Johnston (footballer, born 1959), former Australian rules footballer for Fitzroy Peter Johnston (rugby league, born 1963), former Canterbury, Eastern Suburbs and Newcastle player Peter Johnston (rugby league, born 1968), former Parramatta, South Sydney and Illawarra player Peter Johnston (rugby union) (born 1946), Australian rugby union player Peter Johnston (tennis) (born 1960), Australian tennis player
Other Peter Johnston (BBC) (born 1965), Controller of BBC Northern Ireland Peter Johnston (Canadian politician), Canadian Green Party political candidate Peter Johnston (Wisconsin politician) (1831–1904), Wisconsin state assemblyman Peter Johnston Jr. (1763–1831), Virginia politician
See also Peter Johnson (disambiguation) Peter Johnstone (disambiguation)