2026 İstanbul Cup
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| 2026 İstanbul Cup | |
|---|---|
| Date | 4–10 May |
| Edition | 16th |
| Category | WTA 125 |
| Draw | 32S / 16D |
| Prize money | $115,000 |
| Surface | Clay |
| Location | Istanbul, Turkey |
| Venue | Istanbul Tennis Center |
| 2022 Champions | |
| Singles | |
 Anastasia Potapova | |
| Doubles | |
 Marie Bouzková /  Sara Sorribes Tormo | |
The 2026 İstanbul Cup (also known as the Istanbul Open) is an upcoming professional women's tennis tournament to be played on outdoor clay courts. It will be the 16th edition of the İstanbul Cup, and first as a WTA 125 tournament which is part of the 2026 WTA 125 Circuit. It will take place in Istanbul, Turkey, from 4 through 10 May 2026.[1] The tournament makes a return to tour after a four-year absence.
Points
| Event | W | F | SF | QF | Round of 16 | Round of 32 | Q | Q2 | Q1 |
| Singles | 125 | 81 | 49 | 27 | 15 | 1 | 6 | 4 | 1 |
|---|---|---|---|---|---|---|---|---|---|
| Doubles | 1 | N/a | N/a | N/a | N/a |
Prize money
| Event | W | F | SF | QF | Round of 16 | Round of 32 | Q2 | Q1 |
| Singles | $15,500 | $8,400 | $5,300 | $3,450 | $2,000 | $1,200 | $800 | $600 |
|---|---|---|---|---|---|---|---|---|
| Doubles | $5,700 | $2,900 | $1,700 | $1,175 | $850 | N/a | N/a | N/a |
Singles main draw entrants
Seeds
| Country | Player | Rank† | Seed |
|---|---|---|---|
 CRO |
Donna Vekić | 66 | 1 |
 GBR |
Francesca Jones | 102 | 2 |
 SLO |
Kaja Juvan | 104 | 3 |
| SLO |
Tamara Zidanšek | 129 | 4 |
 UZB |
Polina Kudermetova | 137 | 5 |
 TPE |
Joanna Garland | 141 | 6 |
 SRB |
Lola Radivojević | 142 | 7 |
| CZE |
Linda Fruhvirtová | 149 | 8 |
† Ranking are as of 20 April 2026.[2]
Other entrants
The following players received wildcard entry into the singles main draw :
The following players received entry from the qualifying draw :