Louisiana - Role: Building
| Howard Memorial Library |
| Hudson River Lumber Company General Manager's House |
| Hughes House |
| Hungarian Settlement School |
| Hunt, John S., and Martha McGill Stewart, House |
| Husser School-Husser Community Center |
| Iberville Parish Courthouse |
| Idlewild |
| Ilgenhurst |
| International Trade Mart |
| Iroquois Theater |
| Isaacs-Williams Mansion |
| Island Home |
| Jackson House |
| Jackson House |
| Jacobs, Walter B. |
| Jaenke, F. R., House |
| James, T. L., House |
| Janin Store |
| Jay House |
| Jefferson Hotel |
| Jefferson, Joseph, House |
| Jennings Carnegie Public Library |
| Jennings Post Office |
| Joffrion House |
| John Hancock Building |
| Johnson House |
| Jones, Henry, Cottage |
| Jones House |
| Jones House |
| Jones, Jerry, House |
| Jones, John Carroll, House |
| Jones, Wade H., Sr., House |
| Julia Street Row |
| Jung Hotel |
| Kansas City Southern Depot |
| Kansas City Southern Depot |
| Kansas City Southern Depot |
| Kansas City Southern Depot, Zwolle |
| Kansas City Southern Railway Depot |
| Karnofsky Tailor Shop-House |
| Kateland |
| Katie Plantation House |
| Keachi Baptist Church |
| Keachi Presbyterian Church |
| Keachi Store |
| Keachi United Methodist Church |
| Kean's Apartment Building |
| Keegan House |
| Keegan House |
| Keeny Hall-Louisiana Tech University |
| Kell House |
| Kenilworth Plantation House |
| Kenner Town Hall |
| Kent, Charles Adolph, Sr., House |
| Kent Plantation House |
| Kerner House |
| Key-Mize House |
| Kidd-Davis House |
| Killarney |
| Killgore House |
| Kings Highway Christian Church |
| Kirby-Adam House |
| Kirby House |
| Kisatchie School |
| Kleinpeter House |
| Kleinpeter, John and Amelia Sharp, House |
| Knight Cabin |
| Knox Building |
| Kraemer House |
| Kress Building |
| Kurth, Joseph H., Jr. House |
| LaBarre House |
| Labatut |
| LaBranche Plantation Dependency |
| Labyche-Estorge House |
| Lacombe School |
| Lafayette Coca-Cola Bottling Plant |
| Lafayette Elementary School |
| Lafayette Hardware Store |
| Lafitte Avenue Project Buildings C-47, E-45 and No. 46 |
| Lafitte's Blacksmith Shop |
| LaFleur House |
| Lafourche Parish Courthouse |
| Lake Charles City Hall, Old |
| Lakeside |
| Lakewood |
| LaLanne, Dominique, House and Store |
| Lamartina Building |
| Lambert House |
| Lamorandier-Prudhomme-Jackson House |
| Lancon, Hilaire, House |
| Landry, Kenneth C. and Carolyn B., House |
| Landry Plantation House |
| Lane Plantation House |
| Lapeyrouse Grocery |
| Laran, Jean Marie, House |
| Latiolais, Alexandre, House |
| LaTour, Alexis, House |
| Laurel Hill |
Data from United States Park Service and Wikidata
