The "Umbrella Man" theory is a conspiracy theory surrounding the assassination of President John F. Kennedy in 1963. It suggests that a man holding an open umbrella on a sunny day near the scene of the assassination was involved in some way. Some claim that the umbrella was a signaling device to coordinate the shooting, while others believe it was a disguised weapon or a distraction tactic. However, the theory lacks concrete evidence and is widely regarded as baseless speculation.
