Pennsylvania - Criteria: C (architecture/engineering)
| Grundy Mill Complex |
| Gudgeonville Covered Bridge |
| Guinston United Presbyterian Church |
| Guldin Mill |
| Guthrie, George W., School |
| Gwynedd Hall |
| Habeck, Christian, Farm |
| Hagan, I. N. and Bernadine, House |
| Hager Building |
| Haines, Hanson, House |
| Hain Mill |
| Hair, Matthew, Farm |
| Hajoca Corporation Headquarters and Showroom |
| Halfway Lake Dam |
| Hall, Joseph E., House |
| Hall's Bridge |
| Halls Mill Covered Bridge |
| Hamburg Armory |
| Hamburg Historic District |
| Hamburg Public Library |
| Hamilton, Alexander, House |
| Hamilton Apartments |
| Hamilton-Ely Farmstead |
| Hamilton Family Estate |
| Hammer Creek Bridge |
| Hammersly-Strominger House |
| Hamnett Historic District |
| Hamorton Historic District |
| Hamot, Pierre S. V., House |
| Hampden Firehouse |
| Hampton Hill |
| Hance House and Barn |
| Hand, Gen. Edward, House |
| Handwrought |
| Handycraft Farmstead |
| Hanna, John, Farm |
| Hannastown Farm |
| Hanna, William B., School |
| Hanover Historic District |
| Harbaugh's Reformed Church |
| Harding, Warren G., Junior High School |
| Hare's Hill Road Bridge |
| Harewood and Beechwood |
| Harlan House |
| Harlan Log House |
| Harmon's Covered Bridge |
| Harmony Forge Mansion |
| Harnish, Johannes, Farmstead |
| Harriman Historic District |
| Harrington Covered Bridge |
| Harris Building |
| Harrisburg 19th Street Armory |
| Harrisburg Avenue Tobacco Historic District |
| Harrisburg Cemetery |
| Harrisburg Central Railroad Station and Trainshed |
| Harrisburg Historic District |
| Harrisburg Military Post |
| Harrisburg Polyclinic Hospital |
| Harrisburg Technical High School |
| Harris, John, Mansion |
| Harrison Avenue Bridge |
| Harrison House |
| Harrison, William H., School |
| Harris Switch Tower, Pennsylvania Railroad |
| Hart Building |
| Hartley-Rose Belting Company Building |
| Hartman, George, House |
| Harvey, Peter, House and Barn |
| Harvey, William, House |
| Hatfield-Hibernia Historic District |
| Hatfield House |
| Hawthorne, Nathaniel, School |
| Hawthorne School |
| Hayes Homestead |
| Hayes, Jacob, House |
| Hayes Mill House |
| Hayhurst Farm |
| Hays Bridge Historic District |
| Hazeltine, A. J., House |
| Head House Square |
| Heasley, Charles Grant, House |
| Heathside Cottage |
| Heinz, H.J., Company |
| Heirline Covered Bridge |
| Heisey House |
| Helfrich's Springs Grist Mill |
| Heller, George K., School |
| Heller, Michael and Margaret, House |
| Heller, William Jacob, House |
| Henderson, Dr. William, House |
| Henderson-Metz House |
| Henry, Charles Wolcott, School |
| Herdic, Peter, House |
| Herpel Brothers Foundry and Machine Shop |
| Herr, Christian and Emma, Farm |
| Herr's Mill Covered Bridge |
| Hershey Community Center Building |
| Hershey, Milton S., Mansion |
| Hess, A. B., Cigar Factory, and Warehouses |
| Hessian Powder Magazine |
Data from United States Park Service and Wikidata
