 | Best Nobel Hotel 2 Istanbul | 3.0 star rating | 35 | Old City |
 | Best Nobel Hotel Istanbul | 3.0 star rating | 35 | Old City |
 | Bestpoint Hotel Istanbul | 3.0 star rating | | Old City |
 | Best Town Palace Hotel Istanbul | 3.0 star rating | 41 | Old City |
 | Best Western Antea Palace Hotel & Spa Istanbul | 4.0 star rating | 59 | Old City |
 | Best Western Citadel Special Hotel Istanbul | 4.0 star rating | 31 | Old City |
 | Best Western Empire Palace Hotel Istanbul | 4.0 star rating | 35 | Old City |
 | Best Western Eresin Taxim Hotel Istanbul | 4.0 star rating | 70 | New City |
 | Best Western Plus The President Hotel Istanbul | 4.0 star rating | 201 | Old City |
| Best Western Sile Gardens Hotel Istanbul | 5.0 star rating | | Sile |
 | Best Western Tashan Business & Airport Hotel Istanbul | 3.0 star rating | 46 | Ataturk Airport Istanbul |
 | BeyazitHan Suites Hotel Istanbul | Aparthotel 2* | 12 | Old City |
 | Beyaz Kugu Hotel Istanbul | 3.0 star rating | 38 | Old City |
 | Beymamara Hotel Istanbul | 4.0 star rating | | Ataturk Airport Istanbul |
 | Beynova Hotel Istanbul | 4.0 star rating | 88 | Ataturk Airport Istanbul |
 | Beyoglu Premier Suites Hotel Istanbul | Aparthotel 3* | 18 | New City |
| Bianco Residence & Suites Istanbul Hotel | Pending Category | | Ataturk Airport Istanbul |
| Big Urban Stay Hotel Istanbul | Boutique | 15 | New City |
 | Bika Suites Istanbul Hotel | 4.0 star rating | 90 | Ataturk Airport Istanbul |
 | Bilek Istanbul Hotel | 4.0 star rating | 99 | New City |
 | Birbey Hotel Istanbul | 3.0 star rating | 32 | Old City |
 | Birlik Apart Hotel Istanbul | Aparthotel 3* | 9 | Old City |
| Bisetun Hotel Istanbul | 4 Keys | 29 | Old City |
| Biz Cevahir Hotel Istanbul | 5.0 star rating | | New City |
 | Biz Cevahir Hotel Sultanahmet Istanbul | Boutique | 22 | Old City |
 | Biz Cevahir Istanbul Hotel | 5.0 star rating | 104 | New City |
 | Black Bird Hotel Istanbul | 4.0 star rating | 89 | Old City |
| Blisstanbul Hotel Istanbul | 4.0 star rating | 28 | New City |
| Blue Ä°stanbul GedikpaÅa Hotel Istanbul | 3.0 star rating | | Old City |
| Blue Ä°stanbul Suites Hotel Istanbul | 3 Keys | | Old City |
| Blue Ä°stanbul Taksim Hotel Istanbul | 3.0 star rating | | New City |
 | Blue Eye Suites Hotel Istanbul | Pending Category | 4 | Ataturk Airport Istanbul |
 | Blue House Hotel Istanbul | 3.0 star rating | 26 | Old City |
 | Blue Istanbul Hotel | Without Official Category | 16 | Old City |
 | Blue Mosque Apart Hotel Istanbul | Standard | 3 | Old City |
 | Blue Regency Hotel Istanbul | 4.0 star rating | 80 | Ataturk Airport Istanbul |
 | Blueway Historical Hotel Istanbul | Boutique | 25 | New City |
 | Blueway Hotel City Istanbul | Boutique | 20 | New City |
| Blueway Hotel & Residence Istanbul | Boutique | 21 | New City |
 | Blue World Hotel Istanbul | 4.0 star rating | 87 | Marmara |
 | Blu Hotel Istanbul | Boutique | 17 | Old City |
 | Bof Hotels Ceo Suite Atasehir Istanbul | 5.0 star rating | 199 | Asian Side |
 | Bon Hotel Old City Istanbul | Boutique | 14 | Old City |
| Bosphorus Family Old City Hotel Istanbul | Boutique | 15 | Old City |
 | Bosphorus Old City Hotel Istanbul | Superior 3* | 26 | Old City |
 | Bosphorus Palace Hotel Istanbul | 5.0 star rating | 14 | Asian Side |
| Boursier Hotel Istanbul | Boutique | 40 | New City |
 | Boutique Princess Hotel Istanbul | Boutique | 40 | Asian Side |
 | Boutique Saint Sophia Hotel Istanbul | Boutique | 26 | Old City |
 | Bricks Airport Hotel Istanbul | 5.0 star rating | 138 | Ataturk Airport Istanbul |