Agatha
- taona: 1979
- Firenena: United Kingdom
- Genre: Drama, Mystery, Thriller
- Studio: Sweetwall, First Artists, Warner Bros. Pictures
- Keyword: journalist, husband wife relationship, england, historical figure, disappearance, spa, mystery writer, 1920s, crime fiction writer, female writer
- tale: Michael Apted
- Cast: Dustin Hoffman, Vanessa Redgrave, Timothy Dalton, Helen Morse, Celia Gregory, Paul Brooke