Murder by Decree
- Tahun: 1979
- Negara: Canada, United Kingdom
- Genre: Crime, Mystery, Thriller
- Studio: Canadian Film Development Corporation, Famous Players, Highlight
- Kata kunci: jack the ripper, sherlock holmes
- Pengarah: Bob Clark
- Pelakon: Christopher Plummer, James Mason, David Hemmings, Susan Clark, Anthony Quayle, John Gielgud