The Argyle Secrets is a 1948 American film noir mystery thriller written and directed by Cy Endfield and starring William Gargan and Marjorie Lord. It was based on a half-hour radio play by Endfield, originally heard on CBS's Suspense. The film was made for the micro-budget of $100,000 and shot in eight days.

Engfield admirer Jonathan Rosenbaum called it the first Endfield film "that he would later recall with any pride or affection... a surprisingly beautiful Z-budget thriller hastily adapted from his first radio script and shot in six days."