The 1983–84 Ranji Trophy was the 50th season of the Ranji Trophy. Mumbai won the final against Delhi on first innings lead, thanks mainly to a double century by Sunil Gavaskar.
Dilip Vengsarkar of Bombay scored hundreds in the quarter-final, semifinal and the final.
Kiran More of Baroda scored a career-best 181* in the quarter-final against Uttar Pradesh and added a Ranji trophy record 145 for the last wicket with Vasudev Patel.
Rajinder Goel took 5/7 and 5/18 for Haryana v Jammu and Kashmir.