| 2015 Istanbul Open | |
|---|---|
| Date | 27 April – 3 May |
| Edition | 1st |
| Category | World Tour 250 |
| Draw | 28S / 16D |
| Prize money | €439,405 |
| Surface | Clay / outdoor |
| Location | Istanbul, Turkey |
| Venue | Koza World of Sports Arena |
| Champions | |
| Singles | |
 Roger Federer | |
| Doubles | |
 Radu Albot /  Dušan Lajović | |
The 2015 Istanbul Open (also known as the TEB BNP Paribas Istanbul Open for sponsorship purposes) was a men's tennis tournament played on outdoor clay courts. It was part of the 2015 ATP World Tour. It was the first edition of the Istanbul Open, and an ATP World Tour 250 event. It took place at the Koza World of Sports Arena in Istanbul, Turkey, from 27 April through 3 May 2015. First-seeded Roger Federer won the singles title.