2004–05 Ranji One Day Trophy
| Dates | 9 January – 14 April 2005 |
|---|---|
| Administrator(s) | BCCI |
| Cricket format | List A cricket |
| Tournament format(s) | Round-robin and Playoff format |
| Host(s) | Various |
| Champions | Uttar Pradesh (1st title) and Tamil Nadu (2nd title) |
| Participants | 27 |
| Matches | 69 |
| Most runs | Vidyut Sivaramakrishnan (493) (Tamil Nadu) |
| Most wickets | Ranadeb Bose (15) (Bengal) |
The 2004–05 Ranji One Day Trophy was the twelfth edition of India's annual List A cricket tournament, which became the Vijay Hazare Trophy in 2007. It was contested between 27 domestic cricket teams, starting in January and finishing in April 2005. The final was tied between Uttar Pradesh and Tamil Nadu, and they shared the trophy.