Oregon - Criteria: C (architecture/engineering)
| Benson, Simon, House |
| Benton County Courthouse |
| Benton County State Bank Building |
| Benton Hotel |
| Berg, Charles F., Building |
| Bergman, Joseph, House |
| Beta Theta Pi Fraternity House, Old |
| Bethers, George W., House |
| Beulah Methodist Episcopal Church |
| Bexell, John, House |
| Big Creek Bridge No. 01180 |
| Big Elk Guard Station |
| Billy Meadows Guard Station |
| Biltmore Apartments |
| Bisbee Hotel |
| Bishopcroft of the Episcopal Diocese of Oregon |
| Bishop's House |
| Blackaby, James Rowley and Mary J., House |
| Blake McFall Company Building |
| Blank, Stephen and Parthena M., House |
| Blanton, M. E., House |
| Bly Ranger Station |
| Bohnsen Cottages |
| Bonneville Dam Historic District |
| Boon Brick Store |
| Boston Flour Mill |
| Bosworth, Dr. Ralph Lyman, House |
| Bowers, George W. and Hetty A., House |
| Bowles, Joseph R., House |
| Bowman, F. E., Apartments |
| Bowman Hotel |
| Bowman, John and Ellen, House |
| Boyer, Clarence and Ethel, House |
| BPOE Lodge No. 1168 |
| Brainard, William E., House |
| Braly, J. C., House |
| Bramhall, Jennie, House |
| Bretnor Apartments |
| Brick House Beautiful |
| Broadway Bridge |
| Broadway Building |
| Broadway Hotel |
| Brookside Cemetery |
| Brown Apartments |
| Brown, Charles and Martha, House |
| Brown, Sam, House |
| Bruening, Henry C. and Wilhemina, House |
| Bryson, J. R., House |
| Buck Apartment Building |
| Buckler-Henry House |
| Buehner, Philip, House |
| Bunyan, Paul, Statue |
| Burggraf-Burt-Webster House |
| Burke-Clark House |
| Burnaugh Building |
| Burnside Bridge |
| Burrell Heights Apartments |
| Burrell, Walter F., House |
| Bush, Asahel, House |
| Bush-Breyman Block |
| Butler Bank |
| Butte Falls Ranger Station |
| Buyers Building |
| Bybee-Howell House |
| Byberg, Peter, House |
| Cabin Lake Guard Station |
| Calkins, Windsor W., House |
| Calumet Hotel |
| Calvary Lutheran Church & Parsonage |
| Calvary Presbyterian Church |
| Cameo Theatre |
| Campbell Court Hotel |
| Campbell, David, Memorial |
| Campbell Hotel |
| Campbell, Robert E., House |
| Campbell Townhouses |
| Camp Sherman Community Hall |
| Canemah Historic District |
| Cant, James, Ranch Historic District |
| Canyonville Methodist Church |
| Cape Arago Lighthouse |
| Cape Blanco Lighthouse |
| Cape Creek Bridge No. 01113 |
| Cape Meares Lighthouse |
| Cape Perpetua Shelter and Parapet |
| Cardwell-Holman House |
| Cardwell-Parrish House |
| Cascade Locks Marine Park |
| Cascade Locks Work Center |
| Caton, Jesse H., House |
| Cedar Guard Station No. 1019 |
| Central Building, Public Library |
| Chamberlain, George Earle, House |
| Chambers Bridge |
| Chambers, Frank L. and Ida H., House |
| Chambers, Fred E. House and Grounds |
| Chandler Hotel and Annex |
| Chase Gardens Residential Grouping |
| Chavner Family House |
| Chemeketa Lodge No. 1 Odd Fellows Buildings |
Data from United States Park Service and Wikidata
