The Sign of Four
- Sal: 1987
- Welat: United Kingdom
- Genre: TV Movie, Adventure, Crime, Mystery, Thriller
- Studio: Granada Television
- Keyword: treasure, based on novel or book, river, doctor, sherlock holmes
- Serek: Peter Hammond
- Avdan: Jeremy Brett, Edward Hardwicke, Jenny Seagrove, Ronald Lacey, John Thaw, Emrys James