Joseph Carne-Ross

A conspiracy theory is an allegation that a certain event or events are secretly influenced by a premeditated group or groups of powerful people or organizations working together.

Conspiracy theory and conspiracy theories may also refer to:

• Conspiracy theory (legal term), a theory of a case that presents a conspiracy to be considered by a trier of fact

As part of political tropes

• Islamophobic trope
• Antisemitic trope

• Conspiracy Theory (film), 1997 film starring Mel Gibson and Julia Roberts, directed by Richard Donner
• Conspiracy Theory with Jesse Ventura, TV series hosted by former Governor of Minnesota Jesse Ventura
• Conspiracy Theories, 2006 progressive jazz album by Phil Miller's In Cahoots
• "Conspiracy Theories", an academic paper by Cass Sunstein and Adrian Vermeule
• "Conspiracy Theory" (Mutant X), a 2004 television episode