Alabama - Area of significance: Architecture
| Jefferson Historic District |
| Jemison House Complex |
| Jemison, Robert, Servants' House |
| Jemison-Vandegraaff House |
| Jenkins Farm and House |
| Jenkins Farmhouse |
| Johnson, Axil, House |
| Johnson, John, House |
| Johnson, Samuel, House |
| Johnson's Woods |
| Johnston, Asa, Farmhouse |
| Jones, William C., House |
| Jossen, Joseph, House |
| Jude, George, House |
| Judson College Historic District |
| Julia Street Memorial United Methodist Church |
| J.W. Shreve Addition Historic District |
| Karsner-Carroll House |
| Kate Duncan Smith Daughters of the American Revolution School |
| Kelly Brothers and Rowe Building |
| Kendall Manor |
| Kennedy-Foster House |
| Kennedy House |
| Kenworthy Hall |
| Kerby House |
| Kid Alley Residential Historic District |
| Kilby House |
| Kildare-McCormick House |
| Killcreas House |
| King House |
| King Street Historic District |
| Kirkbride House |
| Kirkwood |
| Knox, Ross, House |
| Koger, William, House |
| Kress Building |
| Kress Building |
| Kress, S. H., and Company Building |
| Kymulga Mill And Covered Bridge |
| Lafayette Heights Historic District |
| Lakeview School |
| Lakewood Historic District |
| Lane-Kendrick-Sherling House |
| Lanford, William, House |
| Larimore House |
| Larmore, Vance C., House |
| Lassiter House |
| Latham United Methodist Church |
| Lawler-Whiting House |
| Leatherbury, George, House |
| Lebanon Chapel AME Church |
| Leech-Hauer House |
| Lee County Courthouse |
| Legion Park Bowl |
| Leinkauf Historic District |
| Levy, George, House |
| Liberty Hall |
| Liberty National Life Insurance Company Building |
| Lincoln Mill and Mill Village Historic District |
| Lindsey, Martin, House |
| Little-Stabler House |
| Loachapoka Historic District |
| Locust Street Historic District |
| Lombardo Building |
| Looney House |
| Lore Historic District |
| Louisville and Nashville Railroad Depot |
| Loveman, Joseph, & Loeb Department Store |
| Lowe Mill and Mill Village Historic Distric |
| Lower Commerce Street Historic District |
| Lower Dauphin Street Commercial District |
| Lower Dauphin Street Historic District |
| Lower Twentieth Street Residential Historic District |
| Lowndesboro Historic District |
| Lowry House |
| Lowther House Complex |
| Lustron House on Columbiana Road |
| Luverne Historic District |
| Lyon-Lamar House |
| Macon County Courthouse |
| Macon County High School |
| Madison Station Historic District |
| Magee, Jacob, House |
| Magnolia Avenue South Historic District |
| Magnolia Grove |
| Main Street Commercial District |
| Main Street Historic District |
| Main-Yankee Street Historic District |
| Malbis Plantation |
| Manchester Terrace |
| Manly-Strong House |
| Marion Courthouse Square Historic District |
| Marshall's Grove |
| Martin, James, House |
| Mason Building |
| Maxwell Air Force Base Senior Officer's Quarters Historic District |
| May and Cooney Dry Goods Company |
| Maysville Historic District |
| McAdory Building |
| McAdory, Thomas, House |
Data from United States Park Service and Wikidata
