Interloper, Interlopers or The Interlopers may refer to:

• The Interloper: Lee Harvey Oswald Inside the Soviet Union, a 2013 book by Peter Savodnik
• Interloper , a fictional character in the Marvel Comics universe
• Interloper Films, a production company
• Interlopers , a 2001 science fiction novel by Alan Dean Foster
• The Interlopers, a Matt Helm spy novel by Donald Hamilton
• "The Interlopers", a short story by Saki
• Interloper (album), by Carbon Based Lifeforms

• Interloper (business)
• Interloper (asteroid), a nominal, but not true member of an asteroid family