Trapp is a surname. Notable people with the surname include:

• A. A. Trapp (1918–2007), Manitoba politician
• Albert Trapp (died 1953), Manitoba politician
• James Trapp (born 1969), American former sprinter and American football player
• John Trapp (1601–1669), English Anglican Bible commentator
• John Q. Trapp (born 1945), American basketball player
• J. B. Trapp (1925–2005), English historian
• Joseph Trapp (1679–1747), English academic and cleric
• Kevin Trapp (born 1990), German football goalkeeper
• Martin E. Trapp (1877–1951), Oklahoma politician
• Petr Trapp (born 1985), Czech footballer
• Wil Trapp (born 1993), American professional soccer player
• Wilhelm Trapp (1889–1948), German Nazi policeman, executed for war crimes
• Trapp Family, Austrian noble family immortalized in the stage musical and film The Sound of Music
  • Georg von Trapp (1880–1947), naval officer and head of the family
  • Hede von Trapp (1877–1947), Austrian painter and poet, sister of Georg
  • Maria von Trapp (1905–1987), stepmother and matriarch of the Trapp Family Singers
  • Maria Franziska von Trapp (1914–2014), member of the Trapp Family Singers
  • Elisabeth von Trapp (born 1955), folk singer, daughter of Werner and granddaughter of Georg and Agatha von Trapp
• Lilian von Trapp (born 1987), German jewellery designer

Fictional characters:

• Captain Edward Trapp, a fictional hero of Brian Callison's 4-book series

See also

• Trapp, Carmarthenshire, village in south-west Wales
• Trapp, Kentucky, an unincorporated community
• Trapp, Virginia, an unincorporated community
• Trapp basalts, or flood basalt, rock formation phenomenon
• Trapp Family Austrian Relief Inc.