9th Wonder of the World or Ninth Wonder of the World may refer to:
People Joseph Darby (jumper) (1861–1937), English long jumper nicknamed the "Ninth Wonder of the World" Chyna (1969–2016), American professional wrestler nicknamed the "Ninth Wonder of the World"
Film Ninth Wonder of the World: The Making of Gorgo, documentary film about the making of the 1961 film Gorgo Prince Charles Cinema, repertory cinema in the West End of London, England
Music 9th Wonder of the World, 1998 album by Witchdoctor Ninth Wonder of the World of Music, 2012 album by Ironing Board Sam
Other Christchurch Seagull Pit, tourist attraction in New Zealand