Kentucky - Area of significance: Architecture
| Louisville Trust Building |
| Louisville War Memorial Auditorium |
| Louisville Water Company Pumping Station |
| Lovelace, Andrew, Jr., House |
| Lowell, James Russell, Elementary School |
| Lower Shawneetown Archeological District |
| Lower Town Neighborhood District |
| Lower West Market Street District |
| Lowry, William C., House |
| Ludlow Lagoon Clubhouse |
| Lyddan, Pat, House |
| Lyles, Pete, House |
| Lyndon Cottage |
| Lyne, Thomas, House |
| Lynnford-Lyndon Hall |
| Lyon, Chittenden P., Jr., House |
| Madison County Courthouse |
| Madisonville Commercial Historic District |
| Madisonville Public Library |
| Madrid Building |
| Maghera Glass-Ormsby Hall |
| Magnolia Street Historic District |
| Magowan, Abraham, House |
| Main Street Commercial District |
| Main Street District, Expanded |
| Main Street Historic District |
| Male Academy |
| Mansfield |
| Mansion Hill Historic District |
| Maple Avenue District |
| Maple Grove |
| Maple Hill |
| Maplehurst |
| Maplewood |
| Marders, Jefferson, House |
| Margaret Hall |
| Marianne Theater |
| Market House |
| Marlow Place Bungalows District |
| Marmaduke Building |
| Marrowbone Historic District |
| Marshall-Bryan House |
| Marshall House |
| Marshall, John, Sr., House |
| Marshall-Wallace House |
| Martin, Benjamin, House |
| Martin House |
| Martin House |
| Martin, James G., House |
| Martin, Lewis Y., House |
| Martin, Maj. John, House |
| Marvin, Dr. J. B., House |
| Mason, Haynes, House |
| Mason House |
| Masonic Widows and Orphans Home |
| Mason, Peter, House |
| Mason, Sue Shelby, House |
| Matheny-Taylor House |
| Mathers, William, House |
| Mattingly House |
| Mauck, Rudolph, House |
| Maxwell House |
| Maxwell Place |
| Mayes, Archibald Scott, House |
| Mayfield Downtown Commercial District |
| Mayfield, John, House |
| May-Fitzpatrick House |
| Mayhugh, John Clifton and Ann Catherine, House |
| Mayhugh, John Clifton, House |
| May-Latta House |
| Mayo, John C. C., Mansion and Office |
| Mayo Methodist Church |
| Mayo, Thomas, House |
| May, Robert, House |
| May, Samuel, House |
| Maysville Downtown Historic District |
| McAdams and Morford Building |
| McAfee Farm Historic District |
| McAfee, George, House |
| McAfee, James, House |
| McBrayer-Clark House |
| McBride House |
| McCallister, John E., House |
| McCann, Benjamin, House |
| McCann, Neal, House |
| McCaughan, John, House |
| McCauley, John, House |
| McChord, William C., House |
| McClain Hotel |
| McClaskey, Newell B., House |
| McClellen House |
| McClure-Barbee House |
| McClure House |
| McClure-Shelby House |
| McConnell House, Law Office, and Slave Quarters |
| McConnell, James, House |
| McConnell, William, House |
| McConnell-Woodson-Philips House |
| McCormack Church |
| McCoun, Joseph-Sharp, D.S., House |
Data from United States Park Service and Wikidata