Peter Graham may refer to:

Arts and entertainment

• Peter Graham (composer) (born 1958), British composer
• Peter Benjamin Graham (1925–1987), Australian visual artist and art theorist
• Peter Sebastian Graham (born 1970), Australian artist
• Peter Graham (writer) (1939–2020), British writer, restaurant critic

Politics

• Peter Graham (Conservative MPP) (1827–1877), British-born Ontario farmer and political figure, MPP for Frontenac
• Peter Graham (Liberal MPP) (1821–1900), English-born Ontario farmer and political figure, MPP for Lambton East
• Peter Graham (Manitoba politician)

Sports

• Peter Graham (cricketer, born 1920) (1920–2000), Indian-born British cricketer
• Peter Graham (cricketer, born 1954) (1954–2015), British cricketer
• Peter Graham (footballer) (born 1947), British footballer
• Peter Graham (fighter) (born 1975), Australian kickboxer, boxer and mixed martial artist
• Peter Graham (rugby league), Australian rugby league footballer of the 1990s

Other people

• Sir Peter Graham (barrister) (1934–2019), British lawyer and parliamentary draftsman
• Peter Graham (judge) (born 1940), justice of the Federal Court of Australia
• Peter Graham (New Zealand mountaineer) (1881–1961), who together with Henrik Sillem made the first ascent of the West Ridge of Mount Cook
• Peter Graham (British Army officer) (born 1937)
• Peter Graham (Marxist), Irish republican and Marxist