Louisiana - Criteria: C (architecture/engineering)
| Courthouse and Lawyers' Row |
| Coushatta Bank Building |
| Cousin, Francois, House |
| Cousin, Francois, House |
| Crescent Plantation |
| Criminal Courts Building |
| Crockett, David, Fire Hall and Pumper |
| Crowell Sawmill Historic District |
| Crowley Historic District |
| Cushman House |
| Daigle House |
| Dansereau House |
| Darby House |
| Dautreuil House |
| Davidson House |
| Decareaux House |
| DELTA QUEEN (Steamboat) |
| 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 |
| Donaldsonville Historic District |
| Donato, Martin, House |
| Dorvin House |
| Down House |
| Downtown Monroe Historic District |
| Drake House |
| Dubach, Fred B., House |
| Dubuisson, Edward Benjamin, House |
| Ducrest Building |
| Ducros Plantation House |
| Dugas House |
| Dulcito Plantation House |
| Dunn House |
| Dupleix House |
| Dupre, Jacques, House |
| East Main Street Historic District |
| Eden |
| Edgewood |
| El Dorado Plantation House |
| Elrose |
| Elton United Methodist Church |
| Emilie Plantation House |
| Emmanuel Baptist Church |
| Enterprise Plantation |
| Episcopal Church of the Epiphany |
| Episcopal Church of the Good Shepherd |
| Episcopal Church of the Incarnation |
| Erath, Auguste, Building |
| Ethridge House |
| Evangeline Bank and Trust Company |
| Evangeline Hotel |
| Evan Hall Slave Cabins |
| Evergreen Plantation |
| Excelsior |
| Factors Row and Thiberge Buildings |
| Fairfield Building, The |
| Fairfield Historic District |
| Fairhaven Plantation House |
| Fairview Plantation House |
| Federal Building |
| Federal Building |
| Federal Fibre Mills Building |
| Felicite Plantation |
| Felix-Block Building |
| Ferriday Commercial Historic District |
| Filhiol, Roland M., House |
| First Christian Church |
| First Methodist Church |
| First National Bank |
| First Presbyterian Church |
| First Presbyterian Church |
| First Street School |
| First United Methodist Church |
| First United Methodist Church |
| First United Methodist Church |
| First United Methodist Church |
| First United Methodist Church |
| First United Methodist Church |
| First United Methodist Church |
| Fischer House |
| Fiske Theatre |
| Fitzgerald House |
| Flagstaff |
| Flesch House |
| Florence Coffee House |
| Flournoy-Wise House |
| Fontenot, Alexandre, fils, House |
| Ford Motor Company Assembly Plant |
| Forest Home |
| Fort Livingston |
| Fort Macomb |
Data from United States Park Service and Wikidata
