New Hampshire - Significance region: Local
| Swallow Boathouse |
| Temple Town Hall |
| Tenney, Samuel, House |
| Thompson Hall |
| Tilton Downtown Historic District |
| Tilton Island Park Bridge |
| Todd Block |
| Town Center Historic District |
| Town Hall and Courthouse |
| Townsend, Jabez, House |
| Troy Village Historic District |
| True Farm |
| Tucker Mountain Schoolhouse |
| Tuttle, Donald D., House |
| Union Chapel |
| Union Hotel |
| Union Meetinghouse-Universalist Church |
| Union Railroad Station and Freight Shed |
| Unitarian Church |
| United Baptist Church of Lakeport |
| Unity Town Hall |
| US Post Office and Courthouse-Littleton Main |
| US Post Office-Dover Main |
| US Post Office-Laconia Main |
| US Post Office-Lancaster Main |
| US Post Office-Peterborough Main |
| US Post Office-Somersworth Main |
| Valley Cemetery |
| Varney School |
| Veterans' Memorial Hall |
| Victory Park Historic District |
| Wakefield House |
| Wakefield Town Hall and Opera House |
| Wakefield Village Historic District |
| Wallace Farm |
| Walpole Academy |
| Washington Common Historic District |
| Watch Rock Camp |
| Watson Academy |
| Weare Town House |
| Webster Congregational Church |
| Weeks, William Dennis, Memorial Library |
| Weston Observatory |
| Whidden-Ward House |
| Whipple, Dr. Solomon M., House |
| Whipple House |
| White Meetinghouse |
| Whittaker, Caleb, Place |
| Whittier Bridge |
| Wiggin, Cornet Thomas, House |
| Wiggin Memorial Library |
| Wilder-Holton House |
| Wildwood Cottage |
| Willard Homestead |
| Wilton Town Hall |
| Winchester Town Hall |
| Wiswall Falls Mills Site |
| Wolfeboro Centre Community Church |
| Woodbury Mill |
| Woodman Road Historic District |
| Wyatt, Samuel, House |
| Wyman Tavern |
| Young, Gen. Mason J., House |
Data from United States Park Service and Wikidata
