The 2003–04 National Division Three North was the fourth season (sixteenth overall) of the fourth division (north) of the English domestic rugby union competition using the name National Division Three North. New teams to the division included Fylde and Kendal who were relegated from the 2002–03 National Division Two while promoted teams included Longton who came up as champions of Midlands Division 1 while Darlington (champions) and Macclesfield (playoffs) came up from North Division 1. The league system was 2 points for a win and 1 point for a draw with the promotion system changing for this season with a playoff system being introduced. The champions of both National Division Three North and National Division Three South would automatically go up but the runners up of these two division