Ohio - Criteria: C (architecture/engineering)
| Biltmore Hotel |
| Bimm Fireproof Warehouse |
| Bingham Company Warehouse |
| Bing's Hotel |
| Bissman, B.F., House |
| Bissman Block |
| Bissman, Peter, House |
| Black-Elliott Block |
| Black, H., and Company Building |
| Black, Philip J., House |
| Black River Viaduct, Baltimore And Ohio Railroad |
| Black Student Union Center |
| Blackwood Covered Bridge |
| "Blaine Hill ""S"" Bridge" |
| Blair, Herbert S., House |
| Blair House |
| Blake, H. G., House |
| Blakeslee Log Cabin |
| Blakslee, Burritt, House |
| Blocksom-Rolls House |
| Blossom, Elzabeth B. and Dudley S., Estate Service Compound |
| Blume High School |
| B'nai Israel Synagogue |
| Boalt, John, House |
| Body Block |
| Boeckling Building |
| Boeckling, G. A., House |
| Boesel, Adolph, House |
| Boesel, Julius, House |
| B & O Freight Terminal |
| Bohemian National Hall |
| Bolton, Chester and Frances, House |
| Bomante House |
| Boneyfiddle Commercial Disrict |
| Bookwalter, Francis, House |
| Booth Homestead |
| B & O Railroad Viaduct |
| Bordner House |
| Bossler, Marcus, House |
| Boston Mills Historic District |
| Botzum Farm |
| Boulter, Cedric G., and Patricia Neils, House |
| Bowman Mill Covered Bridge |
| Bowman's Distillery |
| Boyd School |
| Bradford, Henry, Farm |
| Bradford Junction Interlocking Tower |
| Bradford, Robert, House |
| Bradley, Capt. Alva, House |
| Bradley's, Capt., Second House |
| Bramble, Ayres L., House |
| Brand, Asher, Residence |
| Brandville School |
| Breckenridge, Justin, House |
| Brecksville Town Hall |
| Brecksville Trailside Museum |
| Bredeick-Lang House |
| Breese, Griffith, Farm |
| Brelsford-Seese House |
| Brendel, Charles, House |
| Bretz Farm |
| Brick Commercial Block |
| Brick Vernacular House No. 1 |
| Brick Vernacular House No. 2 |
| Bridenbaugh District No. 3 Schoolhouse |
| Bright, John, Covered Bridge |
| Brightman House |
| Brittany Apartment Building |
| Broad Street Apartments |
| Broad Street Christian Church |
| Broad Street United Methodist Church |
| Broadway Avenue Historic District |
| Broadway Bridge |
| Broadway Building |
| Broadwell, Cyrus, House |
| Bromwell, Jacob, House |
| Brooklyn Bank Building |
| Brooklyn Centre Historic District |
| Brooks, James, House |
| Broom-Braden Stone House |
| Broom Building |
| Brown, Charles, Gothic Cottage |
| Brownella Cottage and Grace Episcopal Church and Rectory |
| Brown-Gorman Farm |
| Brown, Jim, House |
| Brown, Jim, Tavern |
| Brown, John Hartness, House |
| Brown, Samuel N., House |
| Brown, Samuel, P., House |
| Brown, Seth, House |
| Brown Township Building |
| Brown-Wing House |
| Brownwood |
| Brubaker Covered Bridge |
| Brumback Library |
| Brunswick-Balke-Collender Building |
| Bruns-Wynkoop House |
| Bryn Mawr |
| Buchwalter House-Applethorpe Farm |
| Buckeye Furnace Covered Bridge |
Data from United States Park Service and Wikidata
