| 10 Karakoy, A Morgans Original Hotel Istanbul | 4.0 star rating | 71 | Old City |
 | 10 Suites Taksim Hotel Istanbul | Standard | | Taksim |
 | ABEL HOTEL Hotel Istanbul | 3.0 star rating | 34 | Old City |
| AC Hotel Istanbul Macka by Marriot | Superior 4* | 98 | New City |
 | Acra Hotel Istanbul | Boutique | 23 | Old City |
| Ada Karakoy Hotel Istanbul | Boutique | 28 | Old City |
 | Adamar Hotel Istanbul | Boutique | 25 | Old City |
 | Admire Apart Hotel Istanbul | Boutique | 10 | New City |
 | Agan Hotel Istanbul | Boutique | 31 | Old City |
| Agora Life Hotel Istanbul | 4.0 star rating | 16 | Old City |
| Airboss Hotel Istanbul | 3.0 star rating | 64 | Ataturk Airport Istanbul |
 | Akgun Istanbul Hotel | 5.0 star rating | 276 | New City |
| Akin Suites Hotel Istanbul | Without Official Category | 18 | Kadikoy |
| Alaaddin Hotel Istanbul | Standard | | Sultanahmet |
 | Albatros Hagia Sophia Hotel Istanbul | Boutique | 63 | Old City |
 | Albatros Premier Hotel Istanbul | Boutique | 58 | Old City |
 | Alfa Hotel Istanbul | 3.0 star rating | 40 | Old City |
| Alice Ottoman Palace Hotel Istanbul | Boutique | 9 | Old City |
 | Alkoclar Keban Hotel Istanbul | 4.0 star rating | 84 | New City |
 | All Seasons Hotel Istanbul | 4.0 star rating | 66 | Old City |
 | Almina Hotel Istanbul | Boutique | 29 | Old City |
| ALPHONSE HOTEL Hotel Istanbul | 3.0 star rating | 20 | Old City |
 | Alyon Hotel Taksim Istanbul | Boutique | 27 | New City |
| Alyon Suite Hotel Istiklal Istanbul | Boutique | 10 | New City |
 | Alzer Hotel Istanbul | Boutique | 22 | Old City |
 | Ambassador Hotel Istanbul | Boutique | 22 | Old City |
 | Amethyst Hotel Istanbul | 4.0 star rating | 90 | Old City |
 | Amiral Palace Hotel Istanbul | Boutique | 32 | Old City |
 | Amisos Boutique Hotel Istanbul | Boutique | 26 | Old City |
| Anadolu Hotel Istanbul | Boutique | 24 | Sultanahmet |
 | And Hotel Istanbul | Boutique | | Old City |
 | Anemon Galata Hotel Istanbul | Boutique | 30 | New City |
| Angels Home Hotel Istanbul | Boutique | 20 | Sultanahmet |
 | Anjer Hotel Bosphorus Istanbul | 4.0 star rating | 60 | New City |
 | Ansen Suites Hotel Istanbul | Boutique | 10 | New City |
 | Antea Boutique Sultanahmet Hotel Istanbul | Boutique | 42 | Old City |
 | Antik Hotel istanbul Istanbul | 4.0 star rating | 96 | Old City |
| Antique House Istanbul Hotel | Guest House | 8 | Ataturk Airport Istanbul |
 | Antis Hotel Special Class Istanbul | Boutique | 25 | Old City |
 | Aprilis Hotel Istanbul | Boutique | 31 | Old City |
 | Aquarium Hotel Istanbul | Boutique | 21 | Old City |
 | Arach Hotels Harbiye Istanbul | Boutique | 19 | New City |
 | Arasta Boutique Hotel Istanbul | Boutique | | Sultanahmet |
| ARCADE HOTEL ISTANBUL Hotel Istanbul | Without Official Category | | New City |
 | Arcadia Blue Istanbul Hotel | 4.0 star rating | 48 | Old City |
 | Arden City Hotel Istanbul | 3.0 star rating | 36 | Old City |
 | Arden Park Hotel Istanbul | Boutique | 24 | Old City |
 | Arena Hotel Istanbul | Boutique | 27 | Old City |
 | AREN SUITES Hotel Istanbul | Boutique | 17 | Old City |
 | Ares Hotel Istanbul | 3.0 star rating | 19 | Old City |