Wisconsin - Role: Building
| Home Office, Northwestern Mutual Life Insurance Company |
| Hooper, Jessie Jack, House |
| Hoos, Elizabeth, House |
| Hoover, James Stephen and Borland, Elizabeth, Memorial Chapel |
| Hopkins, Willis, House |
| Horicon State Bank |
| Hornburg, Harold, House |
| Horner, John Scott, House |
| Horticultural Hall |
| Horticulture and Agricultural Physics and Soil Science Building |
| 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 |
| Hudson Public Library |
| Hugunin, John and Martha, House |
| Hulburt, C.D., House |
| Hultin, Nicolaus H., House |
| Humphrey, Herman L., House |
| Hunt,Samuel, House |
| Hunt, W. Ben, Cabin |
| Huson, Henry H., House and Water Tower |
| Hustis, John, House |
| Hutchinson Memorial Library |
| 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 |
| Ingalsbe, Adolphus and Sarah, House |
| Ingebretson, Gaute, Loft House |
| Iowa County Courthouse |
| Iron Block |
| Isermann, Anthony and Caroline, House |
| Isermann, Frank and Jane, House |
| Island Lake Camp |
| Island Woolen Company Office Building |
| Italian Workmen's Club |
| Iverson-Johnson House |
| Jabodon |
| Jackman Building |
| Jackson House |
| Jacobs, Herbert A., House |
| Jacobs, Herbert and Katherine, First House |
| Jacobs, Herbert and Katherine, Second House |
| Jacobs, Herbert, Second House |
| Jacobson House and Mill Site |
| Jahn, William F., Farmstead |
| James, Samuel D., House |
| Janesville Cotton Mill |
| Janesville High School |
| Janesville Public Library |
| Janesville Pumping Station |
| Jefferson Fire Station |
| Jefferson High School |
| Jefferson Public Library |
| Jenkins, Halbert D., House |
| Jennings, Ellis, House |
| Jennings, Janet, House |
| Jensen, J. L., House |
| Jensen, Matt and Lena, House |
| Jensen, Tollef, House |
| Jensvold, Gulbrand and Bertha, House |
| Jersild, Rev. Jens N., House |
| Jischke's Meat Market |
| Johnson, Albin, Log House |
| Johnson, A.P., House |
| Johnson, August, House |
| Johnson, Dr. Samuel C., House |
| Johnson, Herbert F., House |
| Johnson, Isabel and Orrin, House |
| Johnson, John, Saloon |
| Johnson, Matt, Log House |
| Johnson, Nels and Nellie, House |
| Johnson, Peter, House |
| Johnson, S.C., and Son Administration Building and Research Tower |
| Johnston Hall |
| Joint Brussels and Garner Dristrict School Number One |
| Jollywood |
| Jonas, Karel, House |
| Jones Dairy Farm |
| Jones, David J. and Maggie, House |
| Jones, Fred B., Estate |
| Jones, Granville D., House |
| Jones-Hill House |
| Jones, Huff, House |
| Jones, John A. and Maggie, House |
| Jones, John H., House |
Data from United States Park Service and Wikidata
