The 2012 Championship 1 was a semi-professional rugby league football competition played in England and Wales, the third tier of the sport in the country. For one season only, the top four teams (Barrow Raiders, Doncaster, Whitehaven and Workington Town) were promoted to the 2013 Rugby Football League Championship, while the champions of the division were decided by a six-team play-off, which was won by Doncaster, who beat Barrow 16–13 at the Halliwell Jones Stadium.