Peter Gray

Peter Gray may refer to:


 * Peter Gray (Australian judge), Federal Court of Australia judge
 * Peter Gray (bioengineer) (born 1946), bioengineer in Australia
 * Peter Gray (chemist) (1926–2012), professor of physical chemistry at the University of Leeds
 * Peter Gray (historian) (born 1965), professor of modern Irish history at Queen's University Belfast
 * Peter Gray (military historian), military historian at Birmingham University
 * Peter Gray (psychologist), American psychologist and author of the introductory psychology textbook, Psychology
 * Peter Gray (sailor) (1935–2022), Irish Olympic sailor
 * Peter Gray (writer) (1807–1887), Scottish writer
 * Peter S. Gray (born 1957), Olympic equestrian for Bermuda and Canada
 * Peter W. Gray (1819–1874), American lawyer, judge, and legislator from Texas
 * Pete Gray (1915–2002), one-armed Major League baseball player
 * Pete Gray (activist) (1980–2011), Australian environmental and anti-war activist
 * "Peter Gray" (song), American ballad