2023 European Open

The 2023 European Open is a men's tennis tournament currently played on indoor hard courts. It is the eighth edition of the European Open and part of the ATP Tour 250 series of the 2023 ATP Tour. It takes place at the Lotto Arena in Antwerp, Belgium, from 16 October until 22 October 2023.

Singles

 * 🇰🇿 Alexander Bublik def. 🇫🇷 Arthur Fils, 6–4, 6–4

Doubles

 * Petros Tsitsipas / Stefanos Tsitsipas def.  Ariel Behar / 🇨🇿 Adam Pavlásek, 6–7(5–7), 6–4, [10–8]

Seeds

 * Rankings are as of 2 October 2023.

Other entrants
The following players received wildcards into the singles main draw:
 * 🇧🇪 David Goffin
 * 🇪🇪 Mark Lajal
 * 🇮🇹 Luca Nardi

The following players received entry from the qualifying draw:
 * 🇧🇪 Alexander Blockx
 * 🇫🇷 Benjamin Bonzi
 * 🇩🇪 Maximilian Marterer
 * 🇫🇷 Giovanni Mpetshi Perricard

Withdrawals

 * 🇮🇹 Matteo Arnaldi → replaced by Alexander Shevchenko
 * Borna Ćorić → replaced by 🇪🇸 Jaume Munar
 * 🇧🇬 Grigor Dimitrov → replaced by 🇫🇷 Hugo Gaston
 * 🇫🇷 Ugo Humbert → replaced by Nuno Borges
 * 🇺🇸 Sebastian Korda → replaced by 🇭🇺 Fábián Marozsán
 * 🇮🇹 Jannik Sinner → replaced by Dominic Stricker
 * 🇫🇷 Luca Van Assche → replaced by 🇩🇪 Dominik Koepfer

Seeds

 * Rankings are as of 2 October 2023.

Other entrants
The following pairs received wildcards into the doubles main draw:
 * 🇧🇪 Zizou Bergs / 🇧🇪 Tibo Colson
 * 🇧🇪 Michael Geerts / 🇧🇪 Gauthier Onclin

The following pair received entry as alternates:
 * 🇷🇴 Victor Vlad Cornea / 🇨🇿 Petr Nouza

Withdrawals

 * Sander Arends / David Pel → replaced by  Sander Arends / 🇫🇷 Quentin Halys → replaced by 🇷🇴 Victor Vlad Cornea / 🇨🇿 Petr Nouza
 * 🇪🇸 Roberto Carballés Baena / 🇪🇸 Bernabé Zapata Miralles → replaced by 🇪🇸 Roberto Carballés Baena / 🇪🇸 Jaume Munar
 * 🇬🇧 Lloyd Glasspool / 🇫🇷 Nicolas Mahut → replaced by 🇬🇧 Lloyd Glasspool / Hugo Nys