2023 Poznań Open

The 2023 Poznań Open was a professional tennis tournament played on clay courts. It was the 19th edition of the tournament which was part of the 2023 ATP Challenger Tour. It took place at the Park Tenisowy Olimpia in Poznań, Poland from 19 to 24 June 2023.

Seeds

 * 1 Rankings are as of 12 June 2023.

Other entrants
The following players received wildcards into the singles main draw:
 * 🇺🇸 Dali Blanch
 * 🇸🇪 Leo Borg
 * 🇵🇱 Maks Kaśnikowski

The following players received entry into the singles main draw as alternates:
 * Max Houkes
 * 🇩🇪 Timo Stodder

The following players received entry from the qualifying draw:
 * 🇺🇸 Ulises Blanch
 * 🇫🇷 Manuel Guinard
 * 🇪🇸 David Jordà Sanchis
 * Jérôme Kym
 * 🇩🇪 Rudolf Molleker
 * 🇦🇹 Neil Oberleitner

The following player received entry as a lucky loser:
 * 🇪🇸 Carlos Taberner

Singles

 * 🇦🇷 Mariano Navone def. Tomás Barrios Vera 7–5, 6–3.

Doubles

 * 🇵🇱 Karol Drzewiecki / 🇨🇿 Petr Nouza def. Ariel Behar / 🇨🇿 Adam Pavlásek 7–6(7–2), 7–6(7–2).