The N33 road is a national primary road in Ireland. It provides a link road in County Louth between the N2 Dublin-Derry, M1 Dublin-Belfast, and Ardee-Dunleer routes. The route connects to the N2 and N52 near Ardee, and connects to a junction on the M1 near the Dunleer Bypass almost directly east of the junction on the N2, a distance of 7.59 km. As of 2008 it is the most recently allocated National Primary Route number, and held the record until 2012 when the N40 was created around the south of Cork City.