This is a list of numbered provincial highways in the Canadian province of New Brunswick. These provincial highways are maintained by the Department of Transportation and Infrastructure in New Brunswick. For a list of formerly-numbered highways, see List of former New Brunswick provincial highways.
Marked by green signs, these highways are the primary routes in the system, and Routes 1, 2, 7, 8, 11, 15, 16 and 95 are all expressways or freeways for part or all of their length. The speed limit generally ranges from , with the highest limits on four-lane freeway sections.
Marked by blue signs, these secondary highways are sometimes the old alignments of primary highways or connector routes between towns or to and from primary highways. The speed limit is generally .
Marked by black signs, these are the tertiary routes that fill out the highway network and connect small communities and areas to more important highways. The speed limit is generally or lower depending on road design standards.
The following roads are designated provincial highways by the New Brunswick Department of Transportation, but have no signed numerical designation: