Kentucky - Significance region: Local
| Lindenberger-Grant House |
| Linden Grove Cemetery |
| Lindsay, James-Trotter, William, House |
| Linn, Will, House |
| Linsey, William, House |
| Little Rock-Jackstown Road Rural Historic District |
| Livesay House |
| Livingston County Courthouse and Clerk's Offices |
| Lloyd, James M., House |
| L & N Passenger Depot |
| Locke-Mount House |
| Locust Avenue |
| Locust Grove Stock Farm |
| Locust, The |
| Loder House |
| Logan House |
| Logan, W. W., House |
| Log House on Shun Pike |
| London Downtown Historic District |
| Long-Briggs House |
| Long, D. T., House |
| Longview Farm House |
| Loretto Historic District |
| Lost River Archeological Cave |
| Loudoun Hall |
| Louisa Commercial Historic District |
| Louisa Residential Historic District |
| Louisa United Methodist Church |
| Louisville and Nashville Combine Car Number 665 |
| Louisville and Nashville Railroad Office Building |
| Louisville and Nashville Railroad Station |
| Louisville College of Dentistry |
| Louisville Cotton Mills |
| Louisville Gas and Electric Company Service Station Complex |
| Louisville Grocery Company Building |
| Louisville, Henderson, and St. Louis Railroad Depot |
| Louisville Lead & Color Co. Paint Factory & Warehouse |
| Louisville Male High School |
| Louisville-Nashville Turnpike Segment |
| Louisville to Bardstown Turnpike Milestones and Roadbed |
| Louisville War Memorial Auditorium |
| Lowell, James Russell, Elementary School |
| Lower Town Neighborhood District |
| Lower West Market Street District |
| Lowry, William C., House |
| Ludlow Lagoon Clubhouse |
| Ludlow Theater, The |
| Luigart Malt House |
| Lyles, Pete, House |
| Lyndon Cottage |
| Lynn Acres Garden Apartments |
| Lynnford-Lyndon Hall |
| Lynnview Historic District |
| Lyon, Chittenden P., Jr., House |
| Machpelah Cemetery |
| Mackville Historic District |
| Madisonville Armory |
| Madisonville Commercial Historic District |
| Madisonville Public Library |
| Madrid Building |
| Maghera Glass-Ormsby Hall |
| Magnolia Street Historic District |
| Magnus Metal Company Building |
| Magoffin, Beriah, Monument |
| Magowan, Abraham, House |
| Main Street District, Expanded |
| Main Street Historic District |
| Maintenance Area District |
| Male Academy |
| Mammoth Cave Baptist Church and Cemetery |
| Mammoth Cave Historic District |
| Manchester Historic District |
| Mansfield |
| Mansion Hill Historic District |
| Mantle Rock Archeological District |
| Maple Avenue District |
| Maple Grove |
| Maple Hill |
| Maplehurst |
| Maple Springs Ranger Station |
| Maplewood |
| Maplewood |
| Marders, Jefferson, House |
| Marianne Theater |
| Market House |
| Marlow Place Bungalows District |
| Marmaduke Building |
| Marrowbone Historic District |
| Marshall-Bryan House |
| Marshall, John, Sr., House |
| Marshall-Wallace House |
| Martin, Benjamin, House |
| Martin County Courthouse |
| Martin House |
| Martin House |
| Martin, James G., House |
| Martin, Lewis Y., House |
| Martyrs Monument in Midway |
| Marvin, Dr. J. B., House |
| Mason, Haynes, House |
Data from United States Park Service and Wikidata
