Oregon - Area of significance: Commerce
| Quackenbush Hardware Store |
| Ray, Harold Wass, House |
| Reddy, Dr. John F. and Mary, House |
| Redmond Downtown Historic District |
| Redwoods Hotel |
| Reed Opera House and McCornack Block Addition |
| Reese and Redman General Merchandise Store |
| Rice Brothers and Adams Building |
| Rice, Napoleon, House |
| Riley-Cutler House |
| Rinehart Building |
| Rippey House |
| River Mill Hydroelectric Project |
| Roesch Building |
| Rogers, George, House |
| Rogue Elk Hotel |
| Rogue River Ranch |
| Roper, Fordyce, House-Southern Oregon Hospital |
| Roseburg Downtown Historic District |
| Rose City Electric Automobile Garage |
| Salem Downtown State Street-Commercial Street Historic District |
| Santiam Wagon Road |
| Sather, Evan Andreas, House |
| Schaefers Building |
| Scheurer, William Riley, House |
| Schmidt, Claus and Hannchen, House |
| Shaniko Historic District |
| Shindler, William, House |
| Shively-McClure Historic District |
| Shogren, Fred A., May, and Ann, House |
| Sholes, Albert S., House |
| Sigler House |
| Silverton Commercial Historic District |
| Slater Building |
| Smith, E. L., Building |
| Smith, Herbert and Katherine, House |
| Smith, N. P., Pioneer Hardware Store |
| Smith, R. S., Motor Company Building |
| Smithson and McKay Brothers Blocks |
| Snowy Butte Flour Mill |
| Southern Pacific Railroad Passenger Station and Freight House |
| South Main Street Commercial Historic District |
| South Oakdale Historic District |
| Sovereign Hotel |
| Spalding Building |
| Sparta Building |
| Sphier, D.H., Building |
| Starkey-McCully Block |
| Starr and Blakely Drug Store |
| St. Helens Downtown Historic District |
| St. Johns Signal Tower Gas Station |
| Stuart, Dr., House |
| Sumpter Valley Railway Historic District |
| Sumpter Valley Railway Passenger Station |
| Sutherlin Bank Building |
| Swetland Building |
| Taylor, George, House |
| The Dalles Commercial Historic District |
| Thompson, Al and Son's, Feed and Seed Company |
| Thompson, John L., House |
| Thompson-Roach Building |
| Tichner, Abraham, House |
| Tillamook Rock Lighthouse |
| Torgler, Frederick, Building |
| Tower, Maj. Morton, House |
| Travelers Home |
| Troy Laundry Building |
| Umpqua River Light House |
| Union Creek Historic District |
| Union Main Street Historic District |
| Uniontown-Alameda Historic District |
| U.S. Customhouse |
| US National Bank Building |
| Vale Drug Store |
| Vale Hotel and Grand Opera House |
| Vinsonhaler Blacksmith Shop |
| Wade, William Lincoln, House |
| Wallowa County Chieftain Building |
| Warren, Frank M., House |
| Watts, James Grant, House |
| Waucoma Hotel |
| Weinhard Brewery Complex |
| West Coast Woods Model Home |
| West, Nathaniel, Buildings |
| Weston Commercial Historic District |
| West's Block |
| West Side Feed and Sale Stable |
| White John B., House |
| Whitney and Gray Building and Jake's Famous Crawfish Restaurant |
| Wickersham Apartments |
| Wilcox, Theodore B., Country Estate |
| Wilkinson-Swem Building |
| Willamette Falls Locks |
| Willamette Valley and Coast Railroad Depot-Corvallis |
| Winchester Dam |
| Witten, T.M., and Emma, Drug Store-House |
| Woodlark Building |
| Woods and Caples General Store |
| Woolen, Isaac, House |
| Wortman, H. C., House |
Data from United States Park Service and Wikidata
