Oklahoma - Criteria: C (architecture/engineering)
| Claremore Auto Dealership |
| Clay Hall |
| Clayton High School-Auditorium |
| Cleveland County Courthouse |
| Clinton Armory |
| Clinton-Hardy House |
| Clover Hotel |
| Coalgate School Gymnasium-Auditorium |
| Cobb Building |
| Colcord Building |
| Cole Chapel School |
| Coleman, George L., Sr., House |
| Coleman Theatre |
| Colony Park Pavilion |
| Conklin House |
| Cordell Carnegie Public Library |
| Cosden Building |
| Coss, V. R., House |
| Cotton County Courthouse |
| Cottonwood Community Center |
| Crawford House |
| Creek Masonic Lodge No. 226 |
| Crescent School |
| Cronkhite Ranch House |
| Cushing American Legion Building |
| Danner, J.W., House |
| Darr School of Aeronautics Hangar No. 3 |
| Dawson School |
| Diamond Point Dependent District No. 44 School |
| Dog Creek School |
| Donahoe, Daniel J., House |
| Dow Grain Company Elevator |
| Downtown Hobart Historic District |
| Downtown Ponca City Historic District |
| Dresser, Carl K., House |
| Drummond, Fred and Adeline, House |
| Dustin Agricultural Building |
| Eason, T. T., Mansion |
| Ed Galloway's Totem Pole Park |
| Edwards Heights Historic District |
| Electric Park Pavilion |
| Eleventh Street Arkansas River Bridge |
| Elks Lodge Building |
| El Reno High School |
| El Reno Municipal Swimming Pool Bath House |
| Enid Armory |
| Enid Cemetery and Calvary Catholic Cemetery |
| Enid Downtown Historic District |
| Enid Terminal Grain Elevators Historic District |
| Escoe Building |
| Eskridge Hotel |
| Farmers Co-op Elevator |
| Farmers' Co-op Elevator |
| Farmers' Exchange Elevator |
| Farmers' Federation Elevator |
| Faulkner, Judge Franklin, House |
| Federal Building and US Courthouse |
| Federal Building and US Courthouse |
| Ferguson House |
| Feuquay Elevator |
| Fewell School |
| First Baptist Church (Colored) |
| First Christian Church |
| First Christian Church |
| First Church of Christ, Scientist |
| First Church of Christ, Scientist |
| First Congregational Church |
| First Methodist Church Building |
| First Methodist-Episcopal Church, South |
| First National Bank and Masonic Lodge |
| First National Bank and Trust Company Building |
| First National Bank and Trust Company Building |
| First National Bank Building |
| First Presbyterian Church |
| First Presbyterian Church |
| First Presbyterian Church |
| First Presbyterian Church |
| First Presbyterian Church of Chandler |
| First Presbyterian Church of Coweta |
| First Presbyterian Church of Lawton |
| First Presbyterian Church of Tonkawa |
| First United Methodist Church |
| First United Methodist Church of Drumright |
| Flynt Building |
| Foyil Filling Station |
| Frank, John, House |
| Franklin, M.E., House |
| French-Parks House |
| Frick, William, House |
| Fullerton Dam |
| Garfield County Courthouse |
| Garnett, Elmer and Lela, House |
| Garvin Rock Church |
| Gate School |
| General Officers Quarters |
| Gillette Historic District |
| Gimeno, Patricio, House |
| Goff, William I. and Magdalen M., House |
| Grady County Courthouse |
| Grant County Courthouse |
Data from United States Park Service and Wikidata
