Wisconsin - Significance region: Local
| Hartland Railroad Depot |
| Hart, Thomas B., House |
| Hartwig, Ferdinand C., House |
| Haseltine Cobblestone House |
| Hatch, Horace W., House |
| Hatch, Seneca W. & Bertha, House |
| Haven-Crandall House |
| Hawks, Frank Winchester, House |
| Hawks Inn |
| Hazel Green Town Hall |
| Hazelwood |
| Heald, Alvah A., House |
| Heart Prairie Norwegian Methodist Episcopal Church |
| Hebron Town Hall |
| Hediger, Herman M. and Hanna, House |
| Hefty-Blum Farmstead |
| Heidelberger, Dr. Charles and Judith, House |
| Heim Mound |
| Heiney's Meat Market |
| Hein, John and Maria, House |
| Heins, Carl Gottlieb, House |
| Hemlock, David, J., House |
| Henry House |
| Henry Mall Historic District |
| Henze, LeRoy A., House |
| Herbster Community Center |
| HETTY TAYLOR (shipwreck) |
| Heyrman, Henry and Mary, House |
| High Cliff Mounds |
| Highland Avenue Methodist Church |
| Highland Boulevard Historic District |
| Highland Park Historic District |
| Hillsboro Condensed Milk Company |
| Hillside Hotel |
| Hilton House Hotel |
| Hinkley, Ahira R., House |
| Hirsig, Louis, House |
| Historic Sixth Street Business District |
| Hixon, Gideon C., House |
| Hoard, Arthur R., House |
| Hoeltz, Herbert, House |
| Hoelz, Alfred M., House |
| Hoff Department Store |
| Hoffman House Hotel |
| Hog Hollow Site |
| Hokenson Fishing Dock |
| Hollenstein Wagon and Carriage Factory |
| Holsten Family Farmstead |
| Holt-Balcom Lumber Company Office |
| Holy Cross Church |
| Holy Cross Church and Convent |
| Holy Family Roman Catholic Church Complex |
| Holy Name Seminary |
| Holy Trinity Roman Catholic Church |
| Holy Trinity School |
| Home Office, Northwestern Mutual Life Insurance Company |
| Honey Creek Parkway |
| Hoos, Elizabeth, House |
| Hoos-Rowell House |
| Hoover, James Stephen and Borland, Elizabeth, Memorial Chapel |
| Hopkins, Willis, House |
| Horicon Site |
| Horicon State Bank |
| Hornburg, Harold, House |
| Hornung Mound Group |
| Horticultural Hall |
| Hortonville Community Hall |
| Hotel Calumet |
| Hotel Chippewa |
| Hotel Laack |
| Hotel Loraine |
| Hotel Northland |
| Hotel Retlaw |
| Hotel Rogers |
| Hotel Schroeder |
| Hotel Wausau |
| Hotel Whiting |
| How-Beckman Mill |
| Howie, David W., House |
| Hoyt, Frank W., Park |
| Hudson Public Library |
| Hugunin, John and Martha, House |
| Hulburt, C.D., House |
| Hultin, Nicolaus H., House |
| Humphrey, Herman L., House |
| Hunting Eagle Mound |
| Hunt,Samuel, House |
| Huron Street Historic District |
| Huson, Henry H., House and Water Tower |
| Hustis, John, House |
| Hutchinson Memorial Library |
| Hyde Chapel |
| Hyer's Hotel |
| Ihm House |
| Imig, Henry and Charles, Block |
| Immanuel Presbyterian Church |
| Independence City Hall |
| Independent Order of Odd Fellows-Lodge #189 Building |
| Independent Order of Odd Fellows Lodge No. 89 |
| Indianapolis Outing Club |
Data from United States Park Service and Wikidata
