The 1937 Provincial Speedway League was the second season of the Provincial League. Seven speedway teams started the season. From the previous season's finishers, Plymouth Panthers had dropped out but Leicester, Birmingham (Hall Green) and Norwich Stars joined up. Leicester withdrew mid-season and their record was expunged. Liverpool Merseysiders also withdrew mid-season but their entry was taken over by Belle Vue. Bristol Bulldogs were the champions and moved up to the National League for the following season.