 | Glamour Hotel Istanbul | Boutique | 39 | Old City |
 | GLK PREMIER Acropol Suites & Spa Hotel Istanbul | Boutique | 22 | Old City |
 | GLK PREMIER Regency Suites & Spa Hotel Istanbul | Boutique | 16 | Old City |
| GLK PREMIER The Home Suites & Spa Hotel Istanbul | Boutique | 18 | Old City |
 | Glorious Hotel Istanbul | 4.0 star rating | 100 | Old City |
 | Golden Crown Hotel Istanbul | 3.0 star rating | 35 | Old City |
| Golden Gate Hotel İstanbul Topkapı Istanbul | Historical Hotel Luxurious | 26 | Old City |
 | Golden Hill Hotel Istanbul | 3.0 star rating | 101 | Old City |
 | Golden Horn Istanbul Hotel | Boutique | 53 | Old City |
 | Golden Horn Sirkeci Hotel Istanbul | 4.0 star rating | 73 | Old City |
| Golden Palace Hotel Istanbul | Boutique | 15 | Old City |
| Golden Rain Hotel Istanbul | Boutique | 20 | Old City |
 | Golden Taha Hotel Istanbul | 4.0 star rating | 47 | Old City |
 | Golden Tulip Istanbul Bayrampasa Hotel | 5.0 star rating | 169 | Old City |
 | Grand Anka Hotel Istanbul | 4.0 star rating | 108 | Old City |
 | Grand Ant Hotel Istanbul | 3.0 star rating | 74 | Old City |
 | Grand Asiyan Hotel Istanbul | 4.0 star rating | 87 | Old City |
| Grand Bazaar Hotel Istanbul | Boutique | 25 | Old City |
 | Grand Beyazid Hotel Istanbul | 4.0 star rating | 67 | Old City |
 | Grand Durmaz Hotel Istanbul | 4.0 star rating | 51 | Old City |
 | Grand Emin Hotel Istanbul | 4.0 star rating | 77 | Old City |
 | Grand Emir Hotel Istanbul | Boutique | 35 | Old City |
 | Grand Hilarium Hotel Istanbul | 4.0 star rating | 74 | Old City |
 | Grand Hotel Gulsoy Istanbul | 4.0 star rating | 138 | Old City |
 | Grand Madrid Hotel Istanbul | 4.0 star rating | 47 | Old City |
 | Grand Ons Hotel Istanbul | 3.0 star rating | 88 | Old City |
 | Grand Oral Hotel Istanbul | 3.0 star rating | 50 | Old City |
 | Grand Pamir Hotel Istanbul | 3.0 star rating | | Old City |
 | Grand Sagcanlar Hotel Istanbul | 3.0 star rating | 50 | Old City |
 | Grand Washington Hotel Istanbul | 4.0 star rating | 120 | Old City |
 | Grand Yavuz Istanbul Hotel | 4.0 star rating | 111 | Old City |
 | Great Fortune Hotel & Spa Istanbul | 4.0 star rating | 60 | Old City |
 | Green Anka Hotel Istanbul | 3.0 star rating | 54 | Old City |
 | Gulec Hotel Istanbul | Boutique | 28 | Old City |
 | Gulhane park hotel Istanbul Hotel | 4.0 star rating | 32 | Old City |
 | Gulhane Suites Hotel Istanbul | Apartment 1st Category | 3 | Old City |
 | Hagia Sophia Hotel Istanbul Old City | 5.0 star rating | 63 | Old City |
 | Hamidiye Hotel Istanbul | 3.0 star rating | 206 | Old City |
 | Hanna Hotel Istanbul | Boutique | 41 | Old City |
 | Harmony Hotel Istanbul | 3.0 star rating | 22 | Old City |
| Hatay Hotel Istanbul | Standard | 18 | Old City |
 | Hettie Hotel Istanbul | Boutique | 22 | Old City |
 | Hippodrome Special Hotel Istanbul | Boutique | 22 | Old City |
 | Historia Hotel Special Class Istanbul | Boutique | 27 | Old City |
 | Historial Hotel Istanbul | Boutique | 27 | Old City |
 | Holiday Inn Istanbul City Hotel | 5.0 star rating | 148 | Old City |
| Hotel Akcinar Istanbul | Boutique | 45 | Old City |
| Hotel Aldem Istanbul | Standard | 21 | Old City |
 | Hotel Black Tulip Istanbul | Boutique | 32 | Old City |
 | Hotel Broken Column Istanbul | 3.0 star rating | 15 | Old City |