Peter or Pete Walker may refer to:

• Peter Walker (Australian politician) (1922–1987)
• Peter Walker, Baron Walker of Worcester (1932–2010), British politician
• Peter Walker (RAF officer) (1949–2015), Lieutenant Governor of Guernsey

• Peter Walker (cricketer, born 1936) (1936–2020), English cricketer and broadcaster
• Peter Walker (cricketer, born 1952), English cricketer for Devon
• Peter Walker (footballer) (1942–2010), Australian rules footballer
• Peter Walker (golfer), Scottish golfer
• Peter Walker (racing driver) (1912–1984), British racing driver
• Pete Walker (baseball) (born 1969), baseball player for the Toronto Blue Jays

• Peter Walker (actor) (born 1927), American film, stage and television actor
• Peter Walker (brewer) (died 1879), Scottish brewer
• Peter Walker (bishop) (1919–2010), Anglican bishop
• Peter Walker (guitarist) (born 1937), American folk guitarist
• Peter Walker (dancer), American ballet dancer
• Peter Walker (landscape architect), American
• Pete Walker (director) (born 1939), British film director
• Peter J. Walker (1916–2003), British musician and audio engineer, founder of Quad Electroacoustics
• Peter Walker (sculptor) (born 1974), British sculptor