A Man Called Dagger (1968) is a low-budget spy film that was the first collaboration between director Richard Rush, cinematographer László Kovács, and stuntman Gary Warner Kent (who also did the film's special effects).

It was filmed in 1966 by Lew Horwitz's Global Screen Associates (GSA) under the title Why Spy? The film was originally intended to have been released by Mike Ripps' Cinema Distributors of America (CDA) in September 1966. When GSA and CDA's partnership collapsed, the film was picked up by MGM and released a year later.