Louisiana - Significance region: Local
| Bogalusa City Hall |
| Bogalusa Coca Cola Bottling Plant |
| Bogalusa Railroad Station |
| Bogard Hall-Louisiana Tech University |
| Bogue Falaya Park |
| Bohemian Community Hall |
| Bolton High School |
| Bolton, James Wade, House |
| Bonin House |
| Bonnie Glen |
| Booker-Lewis House |
| Bordelon, Alfred H., House |
| Borden Dairy |
| Boscobel Cottage |
| Bosco Plantation House |
| Bossier City Municipal Building |
| Bossier High School |
| Bouverans Plantation House |
| Boyce Methodist Church |
| Brame-Bennett House |
| Brandt House |
| Breaux Bridge Historic District |
| Breaux House |
| Brister School House |
| Bristow Tower |
| Britt Place |
| Broadmoor Historic District |
| Brooklyn Church and Cemetery |
| Broussard, Amant, House |
| Broussard House |
| Broussard, Ovide, House |
| Broussard, Valsin, House |
| Brown Hotel and Cafe |
| Brubaker House |
| Brumfield Homestead |
| Brusly High School Gymnasium, Old |
| Bryan House |
| Buchler, Conrad A., House |
| Buckmeadow Plantation House |
| Buena Vista |
| Building at 108 Green Street |
| Building at 225 Baronne Street |
| Buildings at 445-447-449 South Rampart |
| Burdin House |
| Burks House |
| Burleigh House |
| Burnham, J. W., House |
| Burn, The |
| Butler-Greenwood Plantation |
| Byerley House |
| Bynum House |
| Byram, J.E., House |
| Byrd, C. E., High School |
| Caire, E.J., & Co. Stores |
| Calcasieu Marine Bank |
| Calcasieu Parish Courthouse |
| Caldwell House |
| Calhoun Farmhouse |
| Calkins-Orvis House |
| Calliham Plantation House |
| Calumet Plantation House |
| Campbell Apartment Building |
| Camp Hamilton House |
| Camp Moore |
| Camp Parapet Powder Magazine |
| Camp Salmen House |
| Canebrake |
| Caney Mounds |
| Capers-McKenzie House |
| Capital City Press Building |
| Carnahan House |
| Carnahan Store |
| Carroll House |
| Carter House |
| Carter Plantation |
| Carver Courts LA-4 |
| Carver Theater |
| Cary, Joshua B., House |
| Cash Grocery and Sales Company Warehouse |
| Cashpoint Plantation House |
| Caspiana House |
| Castleberry Boarding House |
| Castle Family House |
| Catahoula Parish Courthouse |
| Cate House |
| Cathedral of the Immaculate Conception |
| Cedar Bend Plantation |
| Cedars Plantation |
| Centenary College |
| Central Bank and Trust Co. |
| Central Bank and Trust Company, Mansura |
| Central Fire Station |
| Central Fire Station |
| Central High School |
| Central Railroad Station |
| Chanticleer Gift Shop |
| Charleston Hotel |
| Chauviere House |
| Chauvin House |
| Cherokee Plantation |
Data from United States Park Service and Wikidata
