The 2017 Liga 3 season was the 2nd season of lower-tier and the inaugural season of the third-tier competition in Indonesia with the new name Liga 3. Persatu Tuban, winner of the 2014 Liga Nusantara are the defending champions, as the 2015 Liga Nusantara was not held and the 2016 ISC Liga Nusantara was not counted as an official league. Blitar United won the title after a 2–1 win over Persik Kendal in 2017 Liga 3 Final at Gelora Bumi Kartini Stadium, Jepara on 17 December 2017.