| Holiday Tour | Vize hizmetleri | turizm acenteleri | | 0212 213 34 29 / 0549 629 34 29 / 0534 2 |
| Holy Turizm | Geziler | | 0530 898 72 03 |
| Home Of Istanbul | Otel | | 0532 156 27 29 |
| Homesta Rent A Car | Oto kiralama | | 0507 539 16 99 |
| Home Stay Home Luxury Apart Hotels | Otel | | 0212 227 83 10 / 0212 230 90 43 |
| Hoşgörütur | Seyahat acenteleri | | 0212 217 30 30 / 0212 217 30 35 / 0549 5 |
| Hôtel | Otel | | |
| Hotel 1453 | Otel | | |
| Hotel Adora | Otel | | 0212 527 49 49 / 0212 527 49 50 / 0212 5 |
| Hotel Akcinar | Otel | | 0212 513 32 73 / 0539 598 99 98 / 0212 5 |
| Hotel Aksaray | Otel | | 0212 512 05 19 / 0212 512 05 20 |
| Hotel Aldem | Otel | | 0212 512 40 79 / 0212 512 40 80 / 0212 5 |
| Hotel Amira | Otel | | 0212 516 16 40 / 0551 394 84 57 |
| Hotel Arcadia Blue | Otel | | 0212 516 96 96 / 0212 516 61 18 |
| Hotel Balo | Otel | | |
| Hotel Bazaar | Otel | | 0212 518 77 00 |
| Hotel Best İstanbul | Otel | | 0212 586 03 15 / 0552 598 15 22 |
| Hotel Beyaz Saray | Otel | | 0212 458 98 00 / 0212 458 98 30 |
| Hotel Beyce | Otel | | 0212 513 36 74 / 0545 766 63 41 / 0212 5 |
| Hotel Bosfora | Otel | | 0538 052 28 62 / 0212 236 30 35 / 0212 2 |
| Hotel Bosssuite Business | Otel | | 0216 519 03 03 / 0555 223 33 91 |
| Hotel Çağrı | Otel | | 0212 530 63 63 / 0542 828 53 53 / 0212 5 |
| Hotel Davos | Otel | | 0212 522 58 92 / 0212 512 29 87 |
| Hotel Erkuş | Otel | | 0212 534 31 72 |
| Hotel Evsen | Otel | | 0532 300 83 55 / 0212 527 62 95 |
| Hotel Eyfel | Otel | | 0212 520 97 89 |
| Hotelgates.com | Seyahat acenteleri | | 0212 297 95 40 |
| Hotel Grand İstanbul | Otel | | 0535 386 43 41 / 0212 586 11 12 |
| Hotel İbrahim Paşa | Otel | | 0212 518 03 95 / 0533 300 94 48 |
| Hotel Ilicak | Otel | | 0212 530 44 90 |
| Hotel Kiwi | Otel | | |
| Hotel Kuk | Otel | | 0212 530 06 29 / 0212 530 05 62 |
| Hotel Küpeli | Otel | | 0212 458 56 50 / 0530 820 42 02 |
| Hotel Le Mirage | Otel | | 0549 672 42 00 / 0212 234 96 96 |
| Hotel Mara İstanbul | Otel | | 0537 357 02 23 |
| Hotel Mardia | Otel | | 0212 585 47 47 |
| Hotel Mari Time | Otel | | 0212 516 50 00 |
| Hotel Ocean's 7 | Otel | | 0212 458 66 69 / 0551 397 56 27 |
| Hotel of Quito | Otel | | |
| Hotel Özvural | Otel | | 0212 531 11 56 / 0212 525 27 98 / 0212 5 |
| Hotel Poem | Otel | | 0212 516 76 36 / 0212 518 76 36 / 0539 7 |
| Hotel Prima | Otel | | 0212 525 08 52 / 0212 525 08 51 |
| Hotel Real Life | Otel | | 0212 586 97 47 / 0212 586 98 16 |
| Hotel Saba | Otel | | 0212 458 02 62 |
| Hotel Şişli | Otel | | 0212 230 42 42 / 0212 343 41 06 / 0212 3 |
| Hotel Taksim Home | Otel | | 0530 116 31 61 / 0532 551 03 35 / 0533 3 |
| Hotel The Center | Otel | | 0212 517 35 25 |
| Hotel Torun İstanbul Old City | Otel | | 0212 534 45 50 |
| Hotel Ümit 2 | Otel | | 0212 632 77 80 / 0212 632 77 81 / 0507 8 |
| Hotel Valide Sultan Konagi | Otel | | 0212 638 06 00 / 0212 637 07 05 |