Kniven i hjertet
- Annu: 1981
- Paese: Denmark
- Genre: Drama
- Studio: Vester Vov Vov Filmproduktion
- Parolla chjave: love letter, postman, post office
- Direttore: Christian Braad Thomsen
- Cast: Stig Ramsing, Helle Ryslinge, Johannes Marott, Tommy Kenter, Morten Suurballe, Lars Ivar Jensen