The New Hampshire Division of Historical Resources (DHR) is a government agency of the U.S. state of New Hampshire. Benjamin Wilson is director of DHR and the State Historic Preservation Officer, while Sarah Stewart is commissioner of DHR's parent agency, the New Hampshire Department of Natural and Cultural Resources (DNCR). The main office of DHR is located in Concord.

The U.S. state of New Hampshire has, since 1958, placed historical markers at locations that are deemed significant to New Hampshire history. The New Hampshire Division of Historical Resources (DHR) and the Department of Transportation (DOT) are jointly responsible for the historical marker program. The program is authorized by RSA 227 C:4, X, and RSA 236:40 to 44. As of April 2024, DHR has installed 290 markers, although several have been retired or refurbished.