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.

Singles main-draw entrants Seeds Country Player Rank1 SeedFrancesco Maestrelli1681Edas Butvilas1952Timofey Skatov2053Cezar Crețu2304August Holmgren2475Maks Kaśnikowski2586Max Basing2597Michele Ribecai2648 1 Rankings are as of 31 August 2026.

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].

References