Missouri - Criteria: C (architecture/engineering)
| Krog, Albert, House |
| Krug Park Place Historic District |
| Kruse, Casper, House |
| Kuehne-Schmidt Apartments |
| Kuehn House |
| Kulage, Otto, House |
| Laclede Building |
| Laclede's Landing |
| Lafayette County Courthouse |
| Lafayette Square Historic District |
| Lake of the Ozarks Recreational Demonstration Area Barn/Garage in Kaiser Area |
| Lake of the Ozarks Recreational Demonstration Area Rising Sun Shelter |
| Lake of the Ozarks Recreational Demonstration Area Shelter at McCubbin Point |
| Lake of the Ozarks State Park Camp Clover Point Recreation Hall |
| Lake of the Ozarks State Park Camp Rising Sun Recreation Hall |
| Lambert Building |
| Lambert-Deacon-Hull Printing Company Building |
| Lambskin Temple |
| Land Bank Building |
| Landers Theater |
| Lansdown-Higgins, House |
| Laramie, Marcus, House |
| Larimore, Wilson, House |
| LaSalle Building |
| Laughlin, Drs. George and Blanche, House |
| Lawler Motor Company Building |
| Lawrence County Bank Building |
| Lawrence County Courthouse |
| Lee, Robert E., Hotel |
| Lee's Summit Christian Church Building |
| Lee's Summit Post Office |
| Leight, Valentine, General Store |
| Lennox Hotel |
| Leonardo |
| Lesan-Gould Building |
| Lewis County Courthouse |
| Lewis-Webb House |
| Liberty Memorial |
| Liggett and Myers (Rice-Stix) Building |
| Liggett & Myers Tobacco Co. Building |
| Ligon Apartments |
| Lilly, Edward S. and Mary Annatoile Albert, House |
| Lincoln High School |
| Lincoln School |
| Lindell Real Estate Company Buidling |
| Lindenwood Hall |
| Lindenwood Neighborhood Historic District |
| Lindenwood School |
| Link, Oliver L. and Catherine, House |
| Link, Theodore, Historic Buildings |
| Linn County Jail and Sheriff's Residence |
| Linwood Lawn |
| Linwood Presbyterian Church and Home for Convalescent Employed Women |
| Liquid Carbonic Company Building |
| Lister Building |
| Lock and Dam No. 20 Historic District |
| Lock and Dam No. 22 Historic District |
| Lock and Dam No. 24 Historic District |
| Locust Creek Covered Bridge |
| Locust Hill |
| Locust Street Apartments |
| Locust Street Automotive District |
| Locust Street Historic District |
| Loew's Midland Theater-Midland Building |
| Logan, John Sublett Jr. and Caroline Ashton, House |
| Long, R. A., House |
| Longview Farm |
| Long, William, Log House |
| Loose, Jacob, House |
| Loretto Academy |
| Louderman Building |
| Louise Apartments |
| Louisiana Chicago & Alton Railroad Depot |
| Louisiana Public Library |
| Love, Col. Thomas C., House |
| Love, Emily Rockwell, House |
| Lowe and Campbell Sporting Goods Building |
| Lowell School |
| Luce-Dyer House |
| Luyties Homeopathic Pharmacy Company Building |
| Luzier Special Formula Laboratories Building |
| Lyceum, The |
| Lyric Theater |
| Mackay Building |
| Maclay Mansion |
| Macon County Courthouse and Annex |
| Madison County Courthouse |
| Main and Eight Streets Historic District |
| Maine Apartments |
| Main-Spanish Commercial Historic District |
| Mainstreet Theatre |
| Majestic Apartments |
| Majestic Hotel |
| Major Hotel |
| Majors, Alexander, House |
| Manchester Methodist Episcopal Church |
| Mann, Horace, School |
| Mansur, Isiah, Farmstead Historic District |
| Maple Avenue Historic District |
| Maple Grove |
Data from United States Park Service and Wikidata
