2026 Istanbul Challenger
Tennis tournament
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The 2026 Istanbul Challenger was a professional tennis tournament played on hardcourts. It was the 40th edition of the tournament which was part of the 2026 ATP Challenger Tour. It took place in Istanbul, Turkey between 7 and 13 September 2026.
| 2026 Istanbul Challenger | |
|---|---|
| Date | 7–13 September |
| Edition | 40th |
| Surface | Hard |
| Location | Istanbul, Turkey |
| Champions | |
| Singles | |
 Max Basing | |
| Doubles | |
 Alafia Ayeni / Keshav Chopra | |
Singles main-draw entrants
Seeds
| Country | Player | Rank1 | Seed |
|---|---|---|---|
 ITA |
Francesco Maestrelli | 168 | 1 |
 LTU |
Edas Butvilas | 195 | 2 |
 KAZ |
Timofey Skatov | 205 | 3 |
 ROU |
Cezar Crețu | 230 | 4 |
 DEN |
August Holmgren | 247 | 5 |
 POL |
Maks Kaśnikowski | 258 | 6 |
| GBR |
Max Basing | 259 | 7 |
| ITA |
Michele Ribecai | 264 | 8 |
- 1 Rankings are as of 31 August 2026.[1]
Other entrants
The following players received wildcards into the singles main draw:
Emirhan Bulut- Atakan Karahan
- Koray Kırcı
The following player received entry into the singles main draw through the Next Gen Accelerator programme:
Miguel Tobón
The following players received entry into the singles main draw as alternates:
Alafia Ayeni- Christian Langmo
The following players received entry from the qualifying draw:
Radu Albot
Adrian Boitan- Gabriel Ghețu
Samir Hamza Reguig
Alex Hernández
Fares Zakaria
Champions
Singles
Max Basing def. 
Jay Friend 6–3, 1–6, 6–0.
Doubles
- Alafia Ayeni / Keshav Chopra def.
August Holmgren / Carl Emil Overbeck 6–3, 6–7(5–7), [10–7].