Oklahoma - Criteria: C (architecture/engineering)
| Acre Family Barn |
| Adair County Courthouse |
| Adams Woodframe Grain Elevator |
| Ada Public Library |
| Administration Building |
| Albion State Bank |
| Aldridge Hotel |
| Aldridge Hotel |
| Alfalfa County Courthouse |
| Alston-Bedwell House |
| Ambassador Hotel |
| American Baptist Home Mission House |
| American Legion Hut |
| American Legion Hut |
| Anadarko Armory |
| Anadarko Downtown Historic District |
| Antioch Dependent School District #15 |
| Arcadia Round Barn |
| Ardmore Historic Commercial District |
| Ardmore Municipal Auditorium |
| Arkansas Valley National Bank |
| Arkoma School |
| Ash Creek School |
| Atlas Life Building |
| Atoka Armory |
| Aupperle, Bennie L., Dairy Barn |
| Automobile Alley Historic District |
| Avant's Cities Service Station |
| Babe's Package Store |
| Baker, W. C., House |
| Baker Woodframe Elevator |
| Baker Woodframe Grain Elevator |
| Balloon Hanger at Henry Post Army Airfield |
| Bank of Bigheart |
| Bank of Burbank |
| Bank of Hominy |
| Beal, Mattie, House |
| Beard Cabin |
| Beard Motor Company |
| Beckham County Courthouse |
| Bell Street Historic District |
| Benedictine Heights Hospital |
| Berryhill Building |
| Berry, James E., House |
| Beta Theta Pi Fraternity House, The University of Oklahoma |
| Blackburn Methodist Church |
| Blackwell Armory |
| Blaine County Courthouse |
| Blaine Stadium and Fieldhouse |
| Boggy Depot Site |
| Bon Ton House |
| Boston Avenue Methodist Episcopal Church |
| Boulder Cabin |
| Bounds, James H., Barn |
| Brady Cabin |
| Brady Heights Historic District |
| Braniff Building |
| Branson Building |
| Bridge No. 18 at Rock Creek |
| Briggs, Eugene S., Auditorium |
| Bristow Firestone Service Station |
| Bristow Presbyterian Church |
| Bristow Tire Shop |
| Brittain-Garvin House |
| Broadway Tower |
| Bryan County Courthouse |
| Buena Vista Park Historic District |
| Buffalo City Park Pavilion |
| Buffalo Lodge |
| Burrus Mills Elevator C |
| Busby Theatre |
| Caddo Community Building |
| Calvary Baptist Church |
| Cambria School |
| Canadian County Jail |
| Canute Service Station |
| Carpenter, Joseph, House |
| Carrier Congregational Church |
| Carselowey House |
| Casa Blanca |
| Central Fire Station |
| Central National Bank |
| Central Park Bandstand |
| Champlin, H. H., House |
| Chandler Armory |
| Chandler Bookstore |
| Chandler High School |
| Cherokee Armory |
| Cherokee Friends Church |
| Chickasaw National Capitols |
| Chilocco Indian Agricultural School |
| Chrislip, H. C., House |
| Cimarron County Courthouse |
| Circle Theater |
| Cities Service Station |
| Cities Service Station #8 |
| Citizens Bank Building |
| Citizens Bank Tower |
| Citizens State Bank |
| Clapp-Cunningham Building |
Data from United States Park Service and Wikidata
