All - Architectural style - Greek Revival architecture
| Loew-Define Grocery Store and Home |
| Lone Oaks |
| Lone Pine |
| Long Branch |
| Longfellow, Stephen, House |
| Long Glade Farm |
| Long Grass |
| Longland |
| Long Meadow |
| Long Meadow |
| Long Meadow |
| Long Ridge Village Historic District |
| Longue Vue House and Gardens |
| Longview |
| Longview |
| Longwood |
| Longwood |
| Longwood House |
| Longwood House |
| Loomis-Pomeroy House |
| Lord-Baylies-Bennett House |
| Lord Block |
| Loretto |
| Loudon Town Hall |
| Louviers |
| Lovelace, Andrew, Jr., House |
| Lovell Village Church |
| Lovering, Joseph, House |
| Lovingston Historic District |
| Lower Dauphin Street Historic District |
| Lower Long Cane Associate Reformed Presbyterian Church |
| Lower Market Street Historic District |
| Lower Pargoud |
| Lowler's Tavern |
| Lowndesboro Historic District |
| Lowndes County Courthouse |
| Lucas, John Copeland, House |
| Lucerne |
| Lucky Plantation House |
| Lueschen, John, House |
| Lumpkin, Gov. Wilson, House |
| Lumpkin, Joseph Henry, House |
| Lusk Home and Mill Site |
| Luzerne Presbyterial Institute |
| Lyceum, The |
| Lyddan, Pat, House |
| Lyles, Pete, House |
| Lynchburg Courthouse |
| Lynchburg Presbyterian Church |
| Lyndhurst Plantation |
| Lyne, Thomas, House |
| Lynnside Historic District |
| Lyon-Lamar House |
| Lyon, T.U., House |
| Lyric Theater |
| Mabry, Joseph Alexander, Jr., House |
| MacDonald-Todd House |
| MacGregor-Tallman House |
| Mack, Gerald, House |
| Maddux House |
| Madewood |
| Madison Avenue Methodist Episcopal Church |
| Madison County Courthouse |
| Madison School, District No. 1 |
| Madison Seminary And Home |
| Mad River Block |
| MaGee, Merrill, House |
| Magnolia |
| Magnolia |
| Magnolia |
| Magnolia Grove |
| Magnolia Hall |
| Magnolia Hall |
| Magnolia Hill |
| Magnolia Lane Plantation House |
| Magnolias, The |
| Magnolias, The |
| Magnolia Vale |
| Maine State House |
| Main Gate, Washington Navy Yard |
| Main Hall, Lawrence University |
| Main-Market Historic District |
| Mallard, John Wesley, House |
| Maloney House |
| Maltby, Henry, House |
| Manchester Methodist Episcopal Church |
| Manlove, Bartholomew, House |
| Manly-McCann House |
| Mannheim (082-0005) |
| Manning, Charles, House |
| Manor, The |
| Man, Ralph Sandiford and Julia Boisseau, House |
| Manse, The |
| Mansfield Center Historic District |
| Mansfield Training School and Hospital |
| Mansion House |
| Manville Company Worker Housing Historic District |
| Maple Hall |
| Maples |
| Maples Cottage |
Data from United States Park Service and Wikidata
