Another Thin Man is a 1939 American detective film directed by W. S. Van Dyke, the third of six in the Thin Man series. It again stars William Powell and Myrna Loy as Nick and Nora Charles and is based on Dashiell Hammett's Continental Op story "The Farewell Murder". The Charles' son Nicky Jr. is introduced for the first time. The cast includes their terrier Asta, Virginia Grey, Otto Kruger, C. Aubrey Smith, Ruth Hussey, Nat Pendleton, Patric Knowles, Sheldon Leonard, Tom Neal, Phyllis Gordon and Marjorie Main. Shemp Howard, later of The Three Stooges, appears in an uncredited role as Wacky.

The film was unable to be called Return of the Thin Man because The Thin Man from the original film was "completely dead" according to newspapers in 1939. It was followed by Shadow of the Thin Man (1941).