Louisiana - Role: Building
| Castleberry Boarding House |
| Castle Family House |
| Catahoula Parish Courthouse |
| Catalpa |
| Cate House |
| Cathedral of the Immaculate Conception |
| Cedar Bend Plantation |
| Cedars Plantation |
| Centenary College |
| Center Building of East Louisiana State Hospital |
| Central Bank and Trust Co. |
| Central Bank and Trust Company, Mansura |
| Central Fire Station |
| Central Fire Station |
| Central High School |
| Central Louisiana State Hospital Dairy Barn |
| Central Railroad Station |
| Chanticleer Gift Shop |
| Charity Hospital of New Orleans |
| Charleston Hotel |
| Chatchie Plantation House |
| Chauviere House |
| Chauvin House |
| Cherie Quarters Cabins |
| Cherokee Plantation |
| Chickama |
| China Grove |
| Chretien Point Plantation |
| Christ Episcopal Church |
| Christ Episcopal Church |
| Christ Episcopal Church and Cemetery |
| Church of St. Anne |
| Church of the Assumption of the Blessed Virgin Mary |
| Church of the Nativity |
| Citizens Bank |
| Citizens Bank of Lafourche |
| City Hotel |
| Claiborne Cottage Hotel |
| Claiborne Parish Courthouse |
| Clear Creek AME Church |
| Cloutier, Alexis, House |
| Colbert House |
| Colfax Jail |
| Colorado Southern Railroad Depot |
| Comeaux House |
| Commercial Building |
| Community Rosenwald School |
| Concordia Parish Courthouse |
| Confederate Memorial Hall |
| Conrad Rice Mill |
| Cook, Herman Albert, House |
| Cook House |
| Cooley, G. B., House |
| Cottage Plantation |
| Cottingham House |
| Coushatta Bank Building |
| Cousin, Francois, House |
| Cousin, Francois, House |
| Crescent Plantation |
| Criminal Courts Building |
| Crockett, David, Fire Hall and Pumper |
| Cross Lake Pumping and Filtration Plant |
| Crystal Grocery |
| Curtis, Nathaniel C., Jr. & Frances, House |
| Cushman House |
| Daboval, Emile L. Jr., House |
| D’Agostino Building |
| Daigle House |
| Daigleville School |
| Dansereau House |
| D'Antonio, Guy J. and Rose Caruso, House |
| Darby House |
| Dautreuil House |
| Davidson House |
| Dawson, John S., High School |
| Decareaux House |
| Dellmon, Myrtle Groves Huie, House |
| Dendinger House |
| Denham Springs City Hall |
| DeQuincy Colored High School Gym |
| DeRidder USO Building |
| Derouen House |
| Des Fosse, Dr. Jules Charles, House |
| Desire Plantation House |
| Deslattes House |
| Desobry Building |
| DeSoto Parish Courthouse |
| Destrehan Plantation |
| Dew Drop Inn |
| Dew Drop Social and Benevolent Hall |
| Dillard, James H., House |
| Dixie Plantation House |
| Dixie Theatre |
| Dixon House |
| Dodd College President's Home |
| Donato, Martin, House |
| Dorvin House |
| Down House |
| Drake House |
| Dryades Branch Library |
Data from United States Park Service and Wikidata
