| Dates | 20 October 1984 – 11 February 1985 |
|---|---|
| Administrator(s) | BCCI |
| Cricket format | First-class cricket |
| Tournament format(s) | Knockout |
| Champions | South Zone (8th title) |
| Participants | 5 |
| Matches played | 4 |
| Most runs | Mohammad Azharuddin (SZ) (298) |
| Most wickets | Chetan Sharma (NZ) (15) |
The 1984–85 Duleep Trophy was the 24th season of the Duleep Trophy, a first-class cricket tournament contested by five zonal teams of India: Central Zone, East Zone, North Zone, South Zone and West Zone.
South Zone won the title, defeating North Zone in the final.