Oregon - Criteria: A (event)
| Cape Meares Lighthouse |
| Cape Perpetua Shelter and Parapet |
| Caples, Dr. Charles G. and Lucinda McBride, Farmstead |
| Cascade Locks Marine Park |
| Cascade Locks Work Center |
| Cedar Guard Station No. 1019 |
| Chambers Bridge |
| Champoeg State Park Historic Archeological District |
| Chandler Hotel and Annex |
| Chemawa Indian School Site |
| Chemeketa Lodge No. 1 Odd Fellows Buildings |
| Children's Farm Home School |
| China Ditch |
| Chitwood Bridge |
| Christian, Daniel and Catherine, House |
| Clackamas Lake Ranger Station Historic District |
| Clark Historic District |
| Clatsop County Courthouse |
| Clatsop County Jail (Old) |
| Cloud Cap Inn |
| Cloud Cap-Tilly Jane Recreation Area Historic District |
| Coburg Historic District |
| Cochran-Rice Farm Complex |
| Coke, J. S., Building |
| College Creek Ranger Station |
| College Hill West Historic District |
| Columbia Gorge Hotel |
| Columbia River Highway Historic District |
| Columbia Southern Hotel |
| Columbia Southern Railroad Passenger Station and Freight Warehouse |
| Comfort Station No. 68 |
| Comfort Station No. 72 |
| Congress Apartments |
| Coos Bay Bridge NO. 01823 |
| Coos Bay National Bank Building |
| Coquille River Light |
| Corbett Brothers Auto Storage Garage |
| Corbett, Elliott R., House |
| Corkish Apartments |
| Cornucopia Jailhouse |
| Corvallis Hotel |
| Costanzo Family House |
| Cotillion Hall |
| Courthouse Square |
| Coyote Creek Bridge |
| Crabtree Creek-Hoffman Covered Bridge |
| Crater Lake Lodge |
| Crawfordsville Bridge |
| Crook, Charles, House |
| Crystal Lake Cemetery |
| Currin Bridge |
| Curry, Nathaniel, House |
| Dads' Gates |
| Dallas Cinema |
| Dalles Carnegie Library |
| Damascus School |
| Davis Block |
| Dayton Methodist Episcopal Church |
| Deadwood Creek Bridge |
| Deady Hall |
| Dean’s Beauty Salon and Barber Shop |
| Deere, John, Plow Company Building |
| Delaney-Edwards House |
| DeMoss Springs Park |
| Depoe Bay Bridge No. 01388 |
| Depoe Bay Ocean Wayside |
| Deschutes County Library |
| Dibble, Horace L., House |
| Dorena Bridge |
| Dorris Ranch |
| Double-O Ranch Historic District |
| Drake Park Neighborhood Historic District |
| Dutchman Peak Lookout |
| Eagle Point National Cemetery |
| East Lake Abert Archeological District |
| East Portland Branch, Public Library of Multnomah County |
| East Skinner Butte Historic District |
| Echo City Hall |
| Edwards, Jesse, House |
| Electric Building |
| Elk Lake Guard Station |
| Elsinore Theater |
| Enders Building |
| English Settlement School |
| Enterprise IOOF Hall |
| Enterprise Mercantile and Milling Company Building |
| Enterprise Planing Mill |
| Enterprise Public Library |
| Episcopal Church of the Good Samaritan |
| Ernest Bridge |
| Eskelin, Ed, Ranch Complex |
| Eugene Apartments |
| Eugene Hotel |
| Eugene Pioneer Cemetery |
| Evangelical United Brethren Church |
| Failing Office Building |
| Fairmount Hotel |
| Fairview City Jail |
| Fanno, Augustus, Farmhouse |
| Fernwood Pioneer Cemetery |
Data from United States Park Service and Wikidata
