Louisiana - Area of significance: Architecture
| Clark Courts LA-4-3 |
| Colbert House |
| Colorado Southern Railroad Depot |
| Comeaux House |
| Commercial Building |
| Confederate Memorial Hall |
| Cook House |
| Cooley, G. B., House |
| Cottage Plantation |
| Cottingham House |
| Courthouse and Lawyers' Row |
| Coushatta Bank Building |
| Cousin, Francois, House |
| Cousin, Francois, House |
| Crescent Plantation |
| Criminal Courts Building |
| Crowell Sawmill Historic District |
| Crowley Historic District |
| Curtis, Nathaniel C., Jr. & Frances, House |
| Cushman House |
| Daboval, Emile L. Jr., House |
| Daigle House |
| Daigleville School |
| Dansereau House |
| Darby House |
| Dautreuil House |
| Davidson House |
| Decareaux House |
| DELUGE |
| Dendinger House |
| DeRidder Commercial Historic District |
| Derouen House |
| Des Fosse, Dr. Jules Charles, House |
| Deslattes House |
| Desobry Building |
| DeSoto Parish Courthouse |
| Destrehan Plantation |
| Division of St. John Historic District |
| Dixon House |
| Dodd College President's Home |
| Dog Trot |
| Donaldsonville Historic District |
| Donato, Martin, House |
| Dorvin House |
| Down House |
| Downtown Abbeville Historic District |
| Downtown Alexandria Commercial Historic District |
| Downtown Monroe Historic District |
| Downtown Monroe Historic District |
| Drake House |
| Drehr Place Historic District |
| Dubach, Fred B., House |
| Dubuisson, Edward Benjamin, House |
| Ducrest Building |
| Ducros Plantation House |
| Dufrocq School |
| Dugas House |
| Dulcito Plantation House |
| Dunn House |
| Dupleix House |
| Dupre, Jacques, House |
| East Baton Rouge Parish Library |
| East Feliciana Parish Courthouse |
| East Main Street Historic District |
| Eden |
| Edgewood |
| Edgewood Park Historic District |
| El Dorado Plantation House |
| Elrose |
| Elton United Methodist Church |
| Emile Bergeron Farmstead |
| Emilie Plantation House |
| Emmanuel Baptist Church |
| Enterprise Plantation |
| Episcopal Church of the Epiphany |
| Episcopal Church of the Good Shepherd |
| Episcopal Church of the Incarnation |
| Epney |
| Erath, Auguste, Building |
| Esplanade Ridge Historic District |
| Ethridge House |
| Evangeline Bank and Trust Company |
| Evangeline Hotel |
| Evangeline Theater |
| Evan Hall Slave Cabins |
| Evergreen Plantation |
| Excelsior |
| Factors Row and Thiberge Buildings |
| Fairfield Building, The |
| Fairfield Historic District |
| Fairhaven Plantation House |
| Fairview Plantation House |
| Faubourg Marigny |
| Federal Building |
| Federal Building |
| Federal Fibre Mills Building |
| Felicite Plantation |
| Felix-Block Building |
| Fellowship Rosenwald School Teacher's Home |
| Ferriday Commercial Historic District |
Data from United States Park Service and Wikidata
