Oklahoma - Area of significance: Architecture
| Prairie House |
| Price Tower |
| Provine Service Station |
| Pruett House |
| Public Library of Enid and Garfield County |
| Public Service of Oklahoma Building |
| Putnam Heights Historic Preservation District |
| Railroad Exchange Building |
| Ralls, Joe, House |
| Ramona Theatre |
| Ranch Acres Historic District |
| Randall Tire Company |
| Reifsnyder, Josephine, Lustron House |
| Rein School |
| Renfrow Building |
| Renfrow House |
| Reynolds, James E., House |
| Richardson, Edward, Building |
| Rio Grande Ranch Headquarters Historic District |
| Riverside Historic Residential District |
| Riverside Studio |
| Riverview Historic District |
| Riviera Courts-Motel |
| Robb, Andrew W., House |
| Robbers Cave State Park |
| Roberta School Campus |
| Robertson, Dr. William A.T. and Lillian, House |
| Rock Cafe |
| Rock House |
| Rock Island Depot |
| Rock Island Passenger Station |
| Rock Island Passenger Station |
| Rock Island Plow Building |
| Roff Armory |
| Rogers, Will, Birthplace |
| Rogers, Will, Hotel |
| Roosevelt Elementary School |
| Rosenstein Building |
| Rouleau Hotel |
| Sacred Heart Catholic Church and Rectory |
| Saints Cyril and Methodius Russian Orthodox Greek Catholic Church |
| Sallisaw High School |
| Sally Ann Apartments |
| Santa Fe Depot |
| Santa Fe Depot |
| Santa Fe Depot |
| Santa Fe Depot |
| Santa Fe Depot |
| Santa Fe Depot of Lindsay |
| Sapulpa Downtown Historic District |
| Sayre Champlin Service Station |
| Sayre City Park |
| Sayre Downtown Historic District |
| Sayre-Mann House |
| Sayre Rock Island Depot |
| Schultz-Neal Stone Barn |
| Science Hall |
| Scottish Rite Temple |
| Seawell-Ross-Isom House |
| Security National Bank |
| Seminole County Courthouse |
| Seminole High School |
| Severs Hotel |
| Shady Point School |
| Sharp Lumberyard |
| Sheets House |
| Shepherd Historic District |
| Sherman Machine and Iron Works Building |
| Shinn Family Barn |
| Simmons, Louis B., House |
| Sinclair Service Station |
| Sinopoulo, John, House |
| Skelly, William G., House |
| Skirvin Hotel |
| Smith and Kernke Funeral Directors |
| Snow School |
| Soldani Mansion |
| Sooner Co-op Association Elevator (West) |
| Sooner Theater Building |
| Sophian Plaza |
| Southridge Addition Historic District |
| Southwestern Bell Main Dial Building |
| Southwestern Bell Telephone Building |
| Spanish Village Historic District |
| Spaulding-Olive House |
| Spaulding School Gymnasium-Auditorium |
| Speer School |
| Spencerville School Campus |
| Spring Dell School |
| Stanford Furniture Co. Building |
| St. Anthony's Catholic Church |
| State Highway Department Testing Laboratory |
| State National Bank Building |
| St. Cloud Hotel |
| Stein, L. L., House |
| St. Gregory's Abbey and College |
| Stigler School Gymnasium-Auditorium |
| St. John's Evangelical Lutheran Church |
| St. John Vianney Training School for Girls |
| St. Joseph Convent and Academy |
Data from United States Park Service and Wikidata
