The Liga 3, most often spelled as Liga III, is the third level of the Romanian football league system. Its name was changed from Divizia C to Liga III before the start of the 2006–07 season. It was the first in this format (six series of 18 teams each).
Since the 2014–2015 season Liga III was reorganized from 6 to 5 parallel regional divisions, each with 16 teams.
The bottom four teams from each division are relegated at the end of the season to the Liga IV. From the 12th placed teams, the team with the least points is relegated. To determine these teams, separate standings are computed, using only the games played against clubs ranked 1st through 11th.
Since the 2006–2007 season, the winners of each division got promoted to the 2007–08 Liga II season. There were also two playoff tournaments held at neutral venues involving the second placed teams, one with those from series 1, 2 and 3, the other with those from series 4, 5, and 6. The winners of the playoffs also got promoted to the 2007–08 Liga II season.
Since the 2014–2015 season, the winner of each series promotes directly to the Liga II, in total 5 teams.