All - Architectural style - Renaissance Revival architecture
| Iowa Falls Union Depot |
| Iowa State Capitol |
| Iron Block |
| Irons, Dr. John C., House |
| Irving Female College |
| Irving School |
| Italian Baptist Church |
| Ivy Lodge |
| Jack, Robert, House |
| Jackson, Jefferson Franklin, House |
| Jackson Mansion and Carriage House |
| Jacksonville Historic District |
| Jackson Ward Historic District |
| Jacobs-Hutchinson Block |
| Jacobs, Michael, House |
| Jacobson, Oscar B., House |
| Jacoby, Lysander, House |
| Jamestown Historic District |
| Jarvis, William W., House |
| Java School No. 1 |
| Jefferies House |
| Jemison-Vandegraaff House |
| Jerdone Castle |
| Jersey City YMCA |
| Jewish Center of Coney Island, The |
| Johnson, Andrew, Hotel |
| Johnson, Capt. Nicholas W. and Emma, House |
| Johnson County Courthouse |
| Johnson, Edwin C., House |
| Johnson, Governor Joseph, House |
| Johnson House |
| Johnson, James Weldon, House |
| Johnson-Jolls Complex |
| Johnston, Capt. Simon, House |
| Johnston-Hay House |
| Johnston Historic District |
| Jonas, Charles R., Federal Building |
| Jones, David, House |
| Jones, Harry W., House |
| Jones, James, House |
| Jones, John, House |
| Jones-Read-Touvelle House |
| Jordan School |
| Jordan-Williams House |
| Journal Building |
| Judah, Noble, Estate |
| Kable House |
| Kahn-Jennings House |
| Kanawha County Courthouse |
| Kane, John P., Mansion |
| Kankakee County Courthouse |
| Kansas City, Kansas City Hall and Fire Headquarters |
| Kaufmann's Department Store Warehouse |
| Kelley, Barney, House |
| Kelly, Albert H., House |
| Kelly's Hotel |
| Kendrick, John, House |
| Kennard, Thomas P., House |
| Kennedy, John D., Elementary School |
| Kennedy Mansion |
| Kennedy, Robert, Memorial Presbyterian Church |
| Kenton Post Office |
| Kenworthy Hall |
| Kenyon, William, House |
| Keystone Hotel |
| Kidder County Courthouse |
| Kieldson Double House |
| Killingly High School, Old |
| Kilsyth Terrace |
| Kimball-Stevenson House |
| Kimbrough, Emily, Historic District |
| Kimrey-Haworth House |
| Kindel Building |
| King, Edward, House |
| King-Lancaster-McCoy-Mitchell House |
| Kingman City Building |
| King-McBride Mansion |
| Kingsbury County Courthouse |
| Kings Daughters Public Library |
| Kings Highway Christian Church |
| Kinney, James, Farmstead |
| Kirk, Col. Edward N., House |
| Kirker House |
| Kirkwood |
| Kitzmeyer Furniture Factory |
| Klein and Sutmar Block |
| Kline, Lewis G., Building |
| Kline, Lewis G., House |
| Knight, F. M., Building |
| Knights of Columbus-Indiana Club |
| Knights of Pythias Building and Theatre |
| Knipe-Moore-Rupp Farm |
| Knowles, Lucius, House |
| Knoxville YMCA Building |
| Koenig Building |
| Koester, Nicholas, Building |
| Kohn House |
| Koontz, James H. and Cynthia, House |
| Koren Library |
| Krauskap, Henry, House, and Store |
Data from United States Park Service and Wikidata
