2008 National League Two was a semi-professional rugby league football competition played in the United Kingdom, the third tier of the sport in the country. The top two teams of this league and the winner of the play-offs were promoted to renamed Championship (formerly National League 1). There is no relegation from this league as it is the lowest tier of professional rugby league in the UK.

The competition used the points system introduced by the Rugby Football League ahead of the 2007 season in which teams earned three points for a win, two for a draw, and one bonus point for a loss by 12 points or less. Gateshead Thunder were champions and were promoted along with Barrow Raiders, who finished second, and Doncaster who won in the play-offs.