| Kozerki Open | |||||||||
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| Tournament information | |||||||||
| Event name | Polish Open (WTA), Kozerki Open (ATP) | ||||||||
| Location | Warsaw (WTA), Grodzisk Mazowiecki (ATP), Poland | ||||||||
| Venue | Legia Tennis Centre(WTA), Akademia Tenisowa Tenis Kozerki(ATP) | ||||||||
| Surface | Hard / outdoor | ||||||||
| Website | www.kozerkiopen.pl | ||||||||
| Current champions (2025 ATP, 2025 WTA) | |||||||||
| Men's singles |  Kamil Majchrzak | ||||||||
| Women's singles |  Kateřina Siniaková | ||||||||
| Men's doubles |  Thijmen Loof  Arthur Reymond | ||||||||
| Women's doubles | Weronika Falkowska Dominika Šalková | ||||||||
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The Kozerki Open is a tournament for professional tennis players played on outdoor hardcourts since 2019, renamed the Polish Open for the Women's event in 2022. It is part of the ATP Challenger Tour, and is a WTA 125 tournament (since 2023) on the WTA Tour. Prior to 2023, the tournament was a part of ITF Women's World Tennis Tour. It has been held annually in Grodzisk Mazowiecki, Poland, until the Women's event was moved to Warsaw, Poland in 2024.
