The "umbrella man", later identified as Louie Steven Witt, is a figure who appears in several films and photographs of the assassination of United States President John F. Kennedy.

Louie Steven Witt came forward to the United States House Select Committee on Assassinations in 1978, identifying himself as the "umbrella man" in the footage.

[citation needed] Early speculation came from assassination researchers Josiah Thompson and Richard Sprague, who noticed the open umbrella in a series of photographs.

"[4] Another theory proposed by conspiracy theorist Robert B. Cutler and endorsed by Colonel L. Fletcher Prouty is that the umbrella may have been used to fire a dart with a paralyzing agent at Kennedy to immobilize his muscles and make him a "sitting duck" for an assassination.

When he was tracked down, he barely wanted to interact with journalists but offered to testify before the United States House Select Committee on Assassinations (HSCA).

By waving a black umbrella, Chamberlain's trademark fashion accessory, Witt said that he was protesting the Kennedy family appeasing Adolf Hitler before World War II.