Peter Ryan

Peter Ryan may refer to:

Sports

 * Peter Ryan (cricketer) (born 1951), Australian cricketer
 * Peter Ryan (footballer, born 1891) (1891–1982), Australian rules footballer for St Kilda
 * Peter Ryan (footballer, born 1936) (1936–2021), Australian rules footballer for South Melbourne and police superintendent
 * Peter Ryan (footballer, born 1948) (born 1948), Australian rules footballer for Hawthorn
 * Peter Ryan (rugby league, Newtown), Australian rugby league footballer active 1953–1962
 * Peter Ryan (rugby union, born 1930) (born 1930), English rugby union player
 * Peter Ryan (rugby union, born 1940) (born 1940), Australian rugby union player
 * Peter Ryan (rugby, born 1971) (born 1971), Australian rugby league footballer
 * Peter Ryan (racing driver) (1940–1962), Formula One race driver from Canada
 * Peter Ryan (basketball), player in the Canada national men's basketball team in the 1970s

Other

 * Peter J. Ryan (1841–1908), Union Army soldier and Medal of Honor recipient
 * Peter John Ryan (1925–2002), Australian surgeon
 * Peter Ryan (columnist) (1923–2015), Australian newspaper columnist and author
 * Peter Ryan (journalist), Australian journalist
 * Peter Ryan (police officer) (born 1944), Commissioner of the New South Wales Police from 1996 until 2002
 * Peter Ryan (politician) (born 1950), former leader of the National Party of Australia in Victoria
 * Peter Ryan (singer), contestant on the first season of Australian Idol
 * Peter Ryan (computer scientist), British computer scientist who devised Prêt à Voter