Minnesota - Area of significance: Architecture
| Houston County Courthouse and Jail |
| Howard Lake City Hall |
| Howes, Byron, House |
| Hoyt, E. S., House |
| Hubbard County Courthouse |
| Hubbard, Renesselaer D., House |
| Huff-Lamberton House |
| Huntoon, Lew A., House |
| Hutchinson Carnegie Library |
| Hutchinson, John, House |
| Ihlen Mercantile Company |
| Immanuel Lutheran Church |
| Ingersoll, William, Estate |
| Interstate State Park CCC/WPA/Rustic Style Campground |
| Interstate State Park WPA/Rustic Style Historic District |
| Irvine, Horace Hills, House |
| Irvine Park Historic District |
| Irving School |
| Irving, William, House |
| Isabella Ranger Station |
| Itasca State Park |
| Jackson Commercial Historic District |
| Jackson County Courthouse |
| Jackson, Mitchell, Farmhouse |
| Janesville Free Public Library |
| Jasper School Building |
| Jefferson School |
| Jenks, Capt. Austin, House |
| Johnson, John B., House |
| Johnston Hall-Seabury Divinity School |
| Jones, Harry W., House |
| Jones-Roberts Farmstead |
| Jordan Brewery Ruins |
| Jordan Historic District |
| Jukola Boardinghouse |
| Kabetogama Ranger Station District |
| Kajer, Wencl, Farmstead |
| Kanabec County Courthouse |
| Kappel Wagon Works |
| Kasota Village Hall |
| Kasson Municipal Building |
| Kellogg, Frank B., House |
| Kelsey, Porter, House |
| Keystone Building |
| Kilstofte, Peter P., Farmstead |
| Kirch/Latch Building |
| Kitchi Gammi Club |
| Kline Sanatarium |
| Kniss, Pierce J., House |
| Koochiching County Courthouse |
| Krank Manufacturing Company |
| Krause, Christoph, Farmstead |
| Kremer, Peter, House |
| Kuehn, Lucas, House |
| Lac qui Parle County Courthouse |
| Lac qui Parle State Park WPA/Rustic Style Historic District |
| Lake Bemidji State Park CCC/NYA/Rustic Style Historic Resources |
| Lake Bronson State Park WPA/Rustic Style Historic Resources |
| Lake Carlos State Park WPA/Rustic Style Group Camp |
| Lake Carlos State Park WPA/Rustic Style Historic District |
| Lake City City Hall |
| Lake County Courthouse and Sheriff's Residence |
| Lake Harriet Methodist Episcopal Church |
| Lake Park Bandshell |
| Lake Shetak State Park WPA/Rustic Style Group Camp |
| Lake Shetek State Park WPA/Rustic Style Historic District |
| Laketown Moravian Brethren's Church |
| Lakewood Cemetery Memorial Chapel |
| Lammers, Albert, House |
| Lanesboro Historic District |
| Larson, A., & Co. Building |
| Larson, Frank A., House |
| Larson's Hunters Resort |
| Latto, Rudolph, House |
| Lauer Flats |
| Laurel Apartments |
| Lawther, James L., House |
| Leathers, H. G., House |
| Le Duc, William G., House |
| Lee, Olaf, House |
| Legg, Harry F., House |
| Leland, Muret N., House |
| Lenont, Charles, House |
| LeRoy Public Library |
| Lester River Bridge-Bridge No. 5772 |
| Le Sueur County Courthouse and Jail |
| Leuthold, Jacob, Jr., House |
| Levin, Adolph, Cottage |
| Lewis, E. H., House |
| Lieb, Vincent and Elizabeth, House |
| Lincoln County Courthouse and Jail |
| Lincoln Park Residential Historic District |
| Lincoln School Building |
| Lindbergh, Charles A., State Park WPA/Rustic Style Historic Resources |
| Lind, Gov. John, House |
| Lindholm Oil Company Service Station |
| Little Falls Carnegie Library |
| Little Sisters of the Poor Home for the Aged |
| Log Cabin |
| Lohmar, John, House |
Data from United States Park Service and Wikidata
