David Cook may refer to:

Entertainment

• David Cook (game designer) (active since 1980s), American game designer for TSR
• David Cook (singer) (born 1982), winner of the seventh season of American Idol
  • David Cook (album) (released 2008), the singer's debut album
• David Cook (writer) (1940–2015), British novelist, screenwriter, and TV presenter
• David Essex (David Albert Cook, born 1947), British pop and rock singer

Politics

• David Cook (Arizona politician) (active since 2016), member of the Arizona House of Representatives
• David Cook (Arkansas politician) (born 1950), member of the Arkansas House of Representatives
• David Cook (Northern Ireland politician) (1944–2020), politician of the Alliance Party of Northern Ireland
• David Cook (Texas politician) (born 1971), member of the Texas House of Representatives and former mayor of Mansfield, Texas
• Dave Cook (politician) (1941–1993), British communist politician and climber

Sports

• David Cook (cricketer) (born 1936), former English cricketer
• David Cook (cyclist) (born 1969), British Olympic cyclist
• David Cook (racing driver) (born 1975), British former racing driver

Other people

• David Cook (artist), found object artist in Minneapolis and Chicago
• David Cook (Blockbuster founder) (active since 1978), American businessman
• David Cook (historian) (active since 2003), American professor, and historian of Islam at Rice University
• David Cook (literary critic) (1929–2003), British professor of East African literature
• David C. Cook (1875–2016), a nonprofit Christian publisher in Colorado Springs, Colorado
• David J. Cook (1840/2–1907), Old West detective and marshal
• E. David Cook (21st century), American religion professor at Wheaton College