 | Aslan Istanbul Hotel | 3.0 star rating | 18 | Old City |
 | Asmali Hotel Istanbul | Boutique | 16 | Old City |
 | Aspalace Hotel Istanbul | 3.0 star rating | 28 | Old City |
 | Aspen Hotel Istanbul | 4.0 star rating | 63 | Old City |
 | Ä°stanbul Central Hotel Istanbul | 2.0 star rating | 15 | New City |
 | Astan Hotel Galata Istanbul | Boutique | 8 | New City |
| Astan Hotel Taksim Istanbul | Boutique | 10 | New City |
 | Aston Residence Hotel Istanbul | Boutique | 18 | Old City |
 | Asur Hotel Istanbul | 3.0 star rating | 34 | Old City |
 | Asya Park Hotel Istanbul | 4.0 star rating | 105 | Asian Side |
| Asya Suites Hotel Istanbul | 3.0 star rating | 26 | Asian Side |
 | Atakoy Marina Hotel Istanbul | 4.0 star rating | 170 | Ataturk Airport Istanbul |
 | Atasehir Palace Hotel & Conference Istanbul | 4.0 star rating | 95 | Asian Side |
 | Atik Palace Hotel Istanbul | 3.0 star rating | 45 | New City |
 | Atlantis Hotel Istanbul | 3.0 star rating | 17 | Old City |
| Atrium Suites Hotel Istanbul | Aparthotel 3* | 25 | New City |
 | Aura Apart Hotel Istanbul | Aparthotel 3* | 78 | Old City |
 | Avantgarde Hotel Taksim Istanbul | Boutique | 117 | New City |
 | Avantgarde Hotel Taksim Square Istanbul | Boutique | 61 | New City |
 | Avantgarde Levent Hotel Istanbul | Boutique | 84 | New City |
| Avantgarde Taksim Square Hotel Istanbul | 4.0 star rating | 59 | New City |
 | Avcilar Inci Hotel Istanbul | Boutique | 27 | New City |
 | Avcilar Vizyon Hotel Istanbul | Pending Category | 55 | Old City |
 | Avicenna Hotel Istanbul | Boutique | 48 | Old City |
 | Avm Apart Hotel Istanbul | 3.0 star rating | 130 | New City |
 | Avrupa Residence Suites Hotel Istanbul | Residence | 147 | New City |
 | Ayasofya Hotel Istanbul | Boutique | 22 | Old City |
 | Ayasofya Apart Hotel Istanbul | Aparthotel 3* | 15 | Old City |
| Ayasofya Deluxe Apart Hotel Istanbul | Without Official Category | 15 | Old City |
 | Ayasultan Boutique Hotel Istanbul | Boutique | 36 | Old City |
 | Aybar Hotel Istanbul | Bed And Breakfast | 25 | Old City |
 | Aydinoglu Otel Hotel Istanbul | 4.0 star rating | 28 | Asian Side |
 | Azade Hotel Istanbul | Boutique | 33 | Old City |
| Azade Premier Hotel Istanbul | Boutique | 20 | Old City |
| Azak Hotel Topkapi Istanbul | 4.0 star rating | 118 | Old City |
 | Aziyade Hotel Istanbul | 4.0 star rating | 105 | Old City |
 | Balin Hotel Istanbul | Boutique | 28 | Old City |
| Baran Residence Airport Hotel Istanbul | Residence | 20 | Ataturk Airport Istanbul |
| Barbera Hotel Istanbul | Boutique | | Old City |
 | Barin Hotel Istanbul | 3.0 star rating | 62 | Old City |
| Barok Hotel Istanbul | Boutique | 29 | Old City |
 | Basileus Hotel Istanbul | 3.0 star rating | 20 | Old City |
 | BC Hotel Istanbul | Superior 3* | 15 | New City |
| Bc Pangaldi Hotel Istanbul | 3.0 star rating | 17 | New City |
 | Bekdas Hotel Deluxe Istanbul | 4.0 star rating | 97 | Old City |
 | Bentley By Molton Hotels Istanbul | Boutique | 50 | New City |
| Berce Hotel Istanbul | 3.0 star rating | 7 | Old City |
| Bergama Hotel Istanbul | 3.0 star rating | 55 | Old City |
 | Berjer Hotel Istanbul | Boutique | 36 | New City |
 | Berr Hotel Istanbul | 4.0 star rating | 102 | Old City |