| New Hampshire Highway System | |
|---|---|
Standard highway markers for longest New Hampshire Routes | |
| Highway names | |
| Interstates | Interstate X (I-X) |
| US Highways | U.S. Route n (US X or Route X) |
| State | New Hampshire Route X (NH X or Route X) |
| System links | |
The following is a list of state routes in the U.S. state of New Hampshire. All routes in the state are maintained by the New Hampshire Department of Transportation. New Hampshire route markers feature the profile of the Old Man of the Mountain.