Pennsylvania - Significance region: Local
| Hewitt Covered Bridge |
| Heywood Chair Factory |
| Hibernia House |
| Hibshman Farm |
| High Bridge |
| High German Evangelical Reformed Church |
| High Hill Farm |
| Highland Building |
| Highland Hall |
| Highland Park |
| Highland Park Camp Meeting |
| Highland Park Residential Historic District |
| Highland Towers Apartments |
| Highspire High School |
| High Street Historic District |
| Hill House |
| Hill, John, House |
| Hill's Sawmill |
| Hill's Tavern |
| Himmel's Church Covered Bridge |
| Hite House |
| Hockley Mill Farm |
| Hockley Row |
| Hoene-Werle House |
| Hoffman, George, House |
| Hogue, Robert M., House |
| Hokendauqua Thomas Iron Company Town Historic District |
| Holicong Village Historic District |
| Hollidaysburg Historic District |
| Hollingshead Covered Bridge No. 40 |
| Holman, A. J., and Company |
| Holmes Junior High School |
| Homestead Pennsylvania Railroad Station |
| Hood Octagonal School |
| Hoopes, Cyrus, House and Barn |
| Hopewell Farm |
| Hopewell Historic District |
| Hopkinson, Francis, School |
| Hopper-Snyder Homestead |
| Hopwood-Miller Tavern |
| Hornby School |
| Horn, George L., School |
| Hosanna Church and Cemetery |
| Hotel Abraham Lincoln |
| Hotel Fauchere and Annex |
| Hotel Lykens |
| Hotel Pennsylvania |
| Hotel Sterling |
| Hottenstein Mansion |
| Hough, John and Phineas, House |
| House at 200 West North Avenue |
| House at Springdell |
| House at Upper Laurel Iron Works |
| Household No. 1 Site (36WM61) |
| Houseknecht Farm |
| Houserville Site (36CE65) |
| Houses at 1907-1951 N. 32nd St. |
| Houses at 2000-2018 Delancey Street |
| Houses at 2501-2531 Charles Street |
| Houses at 838-862 Brightridge Street |
| Houston, Henry H., School |
| Howard Tunnel, Northern Central Railway |
| Howe, Julia Ward, School |
| Howell and Brothers Paper Hangings Manufactory |
| Hower-Slote House |
| Hoyle, Harrison & Kaye Textile Mill |
| Hudson Grist Mill |
| Huffman Distillery and Chopping Mill |
| Hughes Covered Bridge |
| Hulmeville Historic District |
| Humane Fire Engine Company No. 1 |
| Hunsberger, Isaac, House |
| Hunter Saw & Machine Company |
| Hunter's Mill Complex |
| Hunterstown Historic District |
| Huntingdon Borough Historic District |
| Huntingdon Furnace |
| Hunt, Roger, Mill |
| Huston, Abram, House and Carriage House |
| Hutchinson Farm |
| Hyson Schools Historic District |
| Iddings-Baldridge House |
| Idlewild |
| Idlewild Farm Complex |
| Illick's Mill |
| Indiana Borough 1912 Municipal Building |
| Indian Deep Farm |
| Indian Steps Cabin |
| Institute for Colored Youth |
| Integrity Title Insurance, Trust and Safe Deposit Company |
| International Harvester Company Building-Philadelphia Branch House |
| International Harvester Company of America: Pittsburgh Branch House |
| Interstate Storage Warehouse |
| Irish-Townsend House |
| Irvine, Guy C., House |
| Irvine United Presbyterian Church |
| Irving Female College |
| Irvin-Patchin House |
| Irwinton Historic District |
| Irwintown Site |
Data from United States Park Service and Wikidata
