The Lost World may refer to:
- The 1912 novel by Sir Arthur Conan Doyle.
- The 1925 film based on the novel.
- The TV series based on the novel, Sir Arthur Conan Doyle's The Lost World.
- The unrelated sequel to Jurassic Park.
For the trope about a lost geographic location, see Lost World.
| This disambiguation page lists pages associated with the same title.
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