P
- Pat Gray, American radio personality
- Patrick Gray, 4th Lord Gray, (d. 1584) Scottish nobleman
- Patrick Gray, 6th Lord Gray, (d. 1612) Scottish nobleman, grandson of the above
- L. Patrick Gray, Acting director of the FBI from 1972–73
- Paul Gray (disambiguation):
- Paul Gray (civil servant), current chairman of HM Revenue & Customs, a British government department
- Paul Gray (IT), IT pioneer
- Paul Gray (English musician), bassist of The Damned
- Paul Gray (songwriter), Australian singer, songwriter and record producer
- Paul Edward Gray, fourteenth president of MIT
- Paul Gray (Slipknot), American musician
- Paul Edward Gray, American engineer
- Percy Gray, American artist
- Peter Gray (disambiguation)
- Peter Gray (historian) (b. 1965), Professor of Modern Irish History at Queen's University Belfast
- Peter Gray (judge), Federal Court of Australia judge
- Peter Gray (psychologist), American psychologist and author of the introductory psychology textbook, Psychology
- Peter Gray (writer), Scottish writer
- Peter S. Gray, 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
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