Massachusetts - Area of significance: Architecture
| Hancock Apartment Building |
| Hancock School |
| Hancock Town Hall |
| Hanover Center Historic District |
| Hapgood House |
| Hapgood, Richard, House |
| Harbach, John, House |
| Harding House-Walker Missionary Home |
| Harding, Sarah H., House |
| Harding-Winter Street Manufacturing District |
| Hardwick House |
| Hardwick Village Historic District |
| Hardy, Joseph, House |
| Hardy, Nahum, House |
| Hardy, Urias, House |
| Hargraves Mill No. 1 |
| Harlow Homestead |
| Harlow Old Fort House |
| Harlow, Sgt. William, Family Homestead |
| Harnden-Browne House |
| Harnden Farm |
| Harnden Tavern |
| Harraden, Edward, House |
| Harriman, Henry I., House |
| Harrington Block |
| Harrington House |
| Harrington, Samuel, House |
| Harrington, Theodore, House |
| Harris Farm |
| Harris-Merrick House |
| Harrison, C. Lewis, House |
| Harrison, Samuel, House |
| Harrison Square Historic District |
| Harris Street Bridge |
| Harriswood Crescent |
| Hart House |
| Hartshorn, Timothy, House |
| Hartwell, George H., House |
| Hartwell House |
| Hartwell, Samuel C., House |
| Harvard Avenue Fire Station |
| Harvard Avenue Historic District |
| Harvard Center Historic District |
| Harvard Houses Historic District |
| Harvard Lampoon Building |
| Harvard Square Historic District |
| Harvard Square Subway Kiosk |
| Harvard Street Historic District |
| Harvard Union |
| Harvard Yard Historic District |
| Harwich Historic District |
| Haskell, Charles, House |
| Haskell, Edward H., Home for Nurses |
| Haskell, William, House |
| Haskins, Sarah A., House |
| Hastings-Morse House |
| Hastings, Oliver, House |
| Hastings Square Historic District |
| Hastings, Stephen, House |
| Hastins, John, Cottage |
| Hatch Homestead and Mill Historic District |
| Hatch, Horace, House |
| Hatch, Ruth and Robert Jr., House |
| Hatfield Center Historic District |
| Hathaway, James D., House |
| Hathaway Tenement |
| Haven, Wilbur Fiske, House |
| Haverhill Board of Trade Building |
| Haverhill Historical Society Historic District |
| Haverhill Powder House |
| Hawkins, Lorenzo D., House |
| Hayden Building |
| Haydenville Historic District |
| Hayes, Charles H., Building |
| Haynes Hotel Waters Building |
| Hayward, Fred R., House |
| Hayward Mill |
| Hayward, William, House |
| Hazelwood Park |
| Hazen-Kimball-Aldrich House |
| Hazen-Spiller House |
| Head of the River Historic District |
| Heard-Lakeman House |
| Heath Center Historic District |
| Heath, Charles, House |
| Heath, Ebenezer, House |
| Hebronville Mill Historic District |
| Henfield House |
| Henking Hotel and Cafe |
| Herrick, Ella Proctor, House |
| Hersey, Ebenezer B., House |
| Heywood, Levi, Memorial Library Building |
| Heywood-Wakefield Company Complex |
| H.H. Richardson Historic District of North Easton |
| Hibbard, Benjamin, Residence |
| Hibernian Hall |
| Hickey-Osborne Block |
| Higgins, Aldus Chapin, House |
| Higgins Armory Museum |
| Higgins-Hodgeman House |
Data from United States Park Service and Wikidata
