New York - Area of significance: Architecture
| Blatchley House |
| Blauvelt-Cropsey Farm |
| Blauvelt House |
| Bleecker Street Subway Station (IRT) |
| Blessed Trinity Roman Catholic Church Buildings |
| Blewer Farm |
| Blink Bonnie |
| Blinn-Pulver Farmhouse |
| Bliss, L., House |
| Block House, The |
| Blood, Jackson, Cobblestone House |
| Bloomer-Dailey House and Balmville Tree |
| Bloomingburg Reformed Protestant Dutch Church |
| Blooming Grove Church |
| Bloomvale Historic District |
| Bloomville Methodist Epicopal Church |
| Blue Mountain Fire Observation Station |
| Blue Mountain House Annex |
| Blydenburgh Park Historic District |
| Bly, Smith, House |
| B'nai Israel Synagogue |
| Boardman House |
| Boardman-Mitchell House |
| Boathouse on the Lullwater of the Lake in Prospect Park |
| Bodine Farmhouse |
| Bodine's Tavern |
| Boerum Hill Historic District |
| Bogardus-DeWindt House |
| Bogie Cottage |
| Boice House |
| Boldt, George C., Yacht House |
| Bolivar Free Library |
| Bolton, James H., House |
| Bolton Priory |
| Bond, Col. William M. and Nancy Ralston, House |
| Bonfoy-Barstow House |
| Bookstaver, Jacob, House |
| Boonville Historic District |
| Booth, Evangeline, House |
| Booth, Mary Louise, Girlhood House |
| Booth, O. H., Hose Company |
| Borland, John, House |
| Borodino District School #8 |
| Borodino Hall |
| Borough Hall Subway Station (IRT) |
| Boscobel |
| Boston Post Road Historic District |
| Boston Road Plaza |
| Botsford, Henry T., House |
| Botsford, Samuel, House |
| Boughton/Haight House |
| Boulders, The |
| Boulevard Houses |
| Bouwerie |
| Bouwerie Lane Theater |
| Bovina Center Historic District |
| Bowen, Benjamin, House |
| Bowers, Dr. Wesley, House |
| Bowery Savings Bank |
| Bowes House |
| Bowne, John, House |
| Box Hill Estate |
| Boxwood Cemetery |
| Boy's High School |
| Brace Farm |
| Bradley, Dan, House |
| Bragdon-Lipe House |
| Bragg, Caleb, Estate |
| Braman, Joseph, House |
| Brand, John, Jr., House |
| Brand, John, Sr., House |
| Brandow, William, House |
| Brandreth Pill Factory |
| Brandywine Avenue School |
| Breakabeen Historic District |
| Brecknock Hall |
| Breckwoldt-Ward House |
| Breese, James L., House |
| Breese-Reynolds House |
| Bresee Hall |
| Brett, Madam Catharyna, Homestead |
| Brewster House |
| Brewster, Oliver, House |
| Brewster, Walter, House |
| Briar Patch Road Historic District |
| Brick Chapel Church and Cemetery |
| Brick Church Complex |
| Brick House |
| Brick Presbyterian Church |
| Brick Presbyterian Church Complex |
| Brick Row Historic District |
| Brick Store Building |
| Brick Tavern Stand |
| Bridgehampton Presbyterian Church |
| Bridge Square Historic District |
| Bridge Street Historic District |
| Bridgewater Railroad Station |
| Briggs, John, House |
| Brigham Hall |
| Brighton Heights Reformed Church |
Data from United States Park Service and Wikidata