Utah - Significance region: Local
| Jepson, James, Jr., House |
| Johansen, Peter, House |
| John Jarvie Historic Ranch District |
| Johnson, Alex and Mary Alice, House |
| Johnson, David and Hattie S. Rasmuson, House |
| Johnson Hall-Deseret Mercantile Building |
| Johnson-Hansen House |
| Johnson, John A. and Annie C. Olsen, House |
| Johnson-Kearns Hotel |
| Johnson, Mont and Harriet, House |
| Johnson-Nielson House |
| Johnson Ranch House |
| Johnson, Robert, House |
| Johnson, William Derby, Jr., House |
| Jolley, Francis Marion, House |
| Jones, David H., House |
| Jones, Frederick Issac and Mary M., House |
| Jordan School District Administration Building |
| Juab County Jail |
| Judd, John W., House |
| Judd, Thomas, House |
| Julien Incription Panel |
| Julien Inscription |
| Kanab Hotel and Cafe |
| Kanab Library |
| Kanab Post Office |
| Kanab (Union Pacific) Lodge |
| Karen's Cist |
| Kaysville City Hall |
| Kelly, T.R., House |
| Keyser-Cullen House |
| Keyser, Malcolm and Elizabeth, House |
| Kilbourn-Leak House |
| Kindred, Nephi and Annie, House |
| Kirk Hotel, The |
| Kirk's Cabin Complex |
| Knapp, Morgan A. and Clarissa R., House |
| Knight-Allen House |
| Knight-Finch House |
| Knight, Jesse, House |
| Knight-Mangum House |
| Knowlton, George Quincy, House |
| Knudsen, Christian and Sarah, House |
| Knudson Brothers Building |
| Knudson, Jonathan and Jennie, House |
| Kuhre, William D., House |
| Ladywood Apartments |
| La Frantz Apartments |
| Landenberger, John C. and Mary, House |
| Langton, James and Susan R., House |
| Larson, Lars Peter, House |
| La Verkin Hydroelectric Power Plant |
| Lawrence Brothers and Company Store |
| Layton Oregon Short Line Railroad Station |
| LDS Park City Meetinghouse |
| Leavitt, Lemuel and Mary Ann, House |
| Lee, Charles W. and Leah, House |
| Lee, Harold B. and Fern, House |
| Lee, John E., House |
| Lefler-Woodman Building |
| Lehi City Hall |
| Lehi Main Street Historic District |
| Lehi North Branch Meetinghouse |
| Lehi Roller Mills |
| Lehi Ward Tithing Barn-Centennial Hall |
| Lemmon, Leander, House |
| Leonard–Taylor House |
| Lewellyn, John T., House |
| Lewis, Dr. David and Juanita, House |
| Lewis, John S. and Izola, House |
| Lincoln Arms Apartments |
| Lincoln Highway Bridge |
| Little Bell Mine Site |
| Livingston, William and Annie, House |
| Logan LDS Sixth Ward Church |
| Lollin Block |
| Loofbourow, James W. and Mary K., House |
| Loop C Comfort Station |
| Loop D Comfort Station |
| Los Gables Apartments |
| Lost Canyon Cowboy Camp |
| Loveless House |
| Lower 25th Street Historic District |
| Luce, Henry, House |
| Lyman, William and Julia, House |
| Lyne, Walter C., House |
| Lyons, Oscar F., House |
| Mabey, Albert and Celestine, House |
| Mabry-Van Pelt House |
| Madsen, David and Evinda, House |
| Maeser School |
| Magna Commercial Downtown Historic District |
| Magna Community Baptist Church |
| Maguire, Don, Duplex |
| Manina, Camillo, House |
| Manti Motor Company Building |
| Marriott, Anne P., House |
| Martin, Manfred and Ethel, House |
| Mattson, John and Mary, House |
| Maxies Pad |
Data from United States Park Service and Wikidata
