Peter Barnes may refer to:
Politicians Peter J. Barnes Jr. (1928–2018), American politician Peter J. Barnes III (1956–2021), American politician
Sportsmen Peter Barnes (footballer) (born 1957), English football player Pete Barnes (1945–2018), American football player
Others Peter Barnes (entrepreneur) (born 1940), American businessman and environmentalist Peter Barnes (Irish republican) (1907–1940), IRA member, perpetrator of the 1939 Coventry bombing Peter Barnes (journalist), senior Washington correspondent for the Fox Business Network Peter Barnes (lighting designer) (born 1955), English lighting designer and show producer Peter Barnes (pilot) (1962–2013), British helicopter pilot Peter Barnes (playwright) (1931–2004), English playwright and screenwriter Peter Barnes (respiratory scientist) (born 1946), British respiratory scientist and clinician
See also John Peter Barnes (1881–1959), United States federal judge