Oregon - Criteria: A (event)
| Post and King Saloon |
| Potter, Wallace and Glenn, House |
| Powers, Ira F., Warehouse and Factory |
| P Ranch |
| Prospect Hotel |
| PT-658 (motor torpedo boat) |
| Railway Exchange Building and Huber's Restaurant |
| Rand Ranger Station |
| Redwoods Hotel |
| Reed Opera House and McCornack Block Addition |
| Reed-Wells House |
| Reid School |
| Reorganized Church of Latter Day Saints |
| Rex Theater |
| Rice Apartments |
| Rice Brothers and Adams Building |
| Rice, Silas A., Log House |
| Richardson-Ulrich House |
| Riddle Ranch |
| Rim Drive Historic District |
| Rim Village Historic District |
| Rinehart Building |
| Ritner Creek Bridge |
| River Mill Hydroelectric Project |
| Roba Ranch, The |
| Rock Creek Methodist Church |
| Rock Fort Campsite |
| Rock O' the Range Bridge |
| Rocky Butte Scenic Drive Historic District |
| Rocky Creek Bridge No. 01089 |
| Rogue Elk Hotel |
| Rogue River Bridge No. 01172 |
| Rogue River Ranch |
| Roome-Stearns House |
| Roseburg Downtown Historic District |
| Roseburg, Oregon, National Guard Armory |
| Rose City Electric Automobile Garage |
| Rose City Golf Clubhouse |
| Rutherford House |
| Saint Patrick's Roman Catholic Church |
| Salem Downtown State Street-Commercial Street Historic District |
| Salem Southern Pacific Railroad Station |
| Sandy Creek Bridge |
| San Farlando Apartments |
| Santiam Wagon Road |
| Sellwood Branch YMCA |
| Shaniko Historic District |
| Shaver-Bilyeu House |
| Sheep Ranch Fortified House |
| Sherman County Courthouse |
| Shirk, David L., Ranch |
| Shively-McClure Historic District |
| Sholes, Albert S., House |
| Short Bridge |
| Siletz Agency Site |
| Silver Creek Youth Camp-Silver Falls State Park |
| Silver Falls State Park Concession Building Area |
| Silverton Commercial Historic District |
| Sinnott Memorial Building No. 67 |
| Siskiyou Smokejumper Base |
| Sisters High School |
| Siuslaw River Bridge No. 01821 |
| Sixes Hotel |
| Smith, Henry Clay, House |
| Smith, N. P., Pioneer Hardware Store |
| Smith, R. S., Motor Company Building |
| Snell, Governor Earl W., Aircraft Crash Site |
| Snowy Butte Flour Mill |
| Soap Creek School |
| Sod House Ranch |
| Southern Pacific Passenger Depot |
| Southern Pacific Railroad Passenger Station and Freight House |
| South Main Street Commercial Historic District |
| South Oakdale Historic District |
| South Park Blocks |
| South Portland Historic District |
| Sovereign Hotel |
| Spalding Building |
| Sparta Building |
| Spokane, Portland and Seattle Railway Steam Locomotive |
| Springdale School |
| Springfield General Hospital |
| Spring Valley School |
| State Library of Oregon |
| St. Elizabeth Hospital (Old) |
| Stewart Bridge |
| St. Helens Downtown Historic District |
| St. James Episcopal Church |
| St. James Lutheran Church |
| St. John's Episcopal Church |
| St. Johns Signal Tower Gas Station |
| St. John the Evangelist Roman Catholic Church |
| Stone Bridge and the Oregon Central Military Wagon Road |
| St. Patrick's Roman Catholic Cemetery |
| St. Patrick's Roman Catholic Church and Rectory |
| St. Paul Roman Catholic Church |
| St. Peter's Roman Catholic Church |
| St. Thomas' Episcopal Church |
| SUMPTER VALLEY GOLD DREDGE (dredge) |
| Sumpter Valley Railway Historic District |
Data from United States Park Service and Wikidata
