The 2017–18 Ranji Trophy was the 84th season of the Ranji Trophy, the premier first-class cricket tournament that took place in India between October 2017 and January 2018. Vidarbha won the tournament, beating Delhi by 9 wickets in the final, to win their first Ranji Trophy title. Vidarbha made their Ranji Trophy debut in the 1957–58 season, making it the third-longest wait before a team won their maiden title. Vidarbha's captain, Faiz Fazal, said that "winning the Ranji Trophy has been the biggest achievement in my career".