The 2021–22 Thai League 3 Northern region is a region in the regional stage of the 2021–22 Thai League 3.[1] The tournament was sponsored by Blue Dragon Lottery Online, and known as the Blue Dragon League for sponsorship purposes.[2][3] A total of 12 teams located in Northern, Upper western, and Upper central of Thailand will compete in the league of the Northern region.
Source: Thai League Legend: Blue = home team win; Yellow = draw; Red = away team win. For upcoming matches, an "a" indicates there is an article about the rivalry between the two participants.