Threshold
- Jaar: 1981
- Land: Canada
- Genre: Drama, Sciencefiction
- Studio: Paragon Motion Pictures, Canada Permanent Trust Company
- Trefwoord: heart, heart transplant, artificial heart
- Regisseur: Richard Pearce
- Gips: Donald Sutherland, John Marley, Sharon Acker, Mare Winningham, Jeff Goldblum, Michael Lerner