2023 Geneva Open

The 2023 Geneva Open (sponsored by Gonet) was a men's tennis tournament played on outdoor clay courts. It was the 20th edition of the Geneva Open and part of the ATP Tour 250 series of the 2023 ATP Tour. It took place at the Tennis Club de Genève in Geneva, Switzerland, from 21 to 27 May 2023.

Singles

 * Nicolás Jarry def. 🇧🇬 Grigor Dimitrov, 7–6(7–1), 6–1

Doubles

 * 🇬🇧 Jamie Murray / 🇳🇿 Michael Venus def. 🇪🇸 Marcel Granollers / 🇦🇷 Horacio Zeballos, 7–6(8–6), 7–6(7–3)

Prize money

 * per team

Seeds

 * Rankings are as of 8 May 2023.

Other entrants
The following players received wildcards into the singles main draw:
 * 🇧🇬 Grigor Dimitrov
 * 🇫🇷 Benoît Paire
 * 🇩🇪 Alexander Zverev

The following players received entry using a protected ranking into the singles main draw:
 * 🇧🇴 Hugo Dellien
 * 🇦🇷 Guido Pella

The following players received entry from the qualifying draw:
 * 🇪🇸 Daniel Rincón
 * 🇺🇦 Vitaliy Sachko
 * Nino Serdarušić
 * 🇮🇹 Stefano Travaglia

Withdrawals

 * 🇺🇸 John Isner → replaced by 🇧🇴 Hugo Dellien
 * 🇫🇷 Constant Lestienne → replaced by 🇺🇸 Christopher Eubanks
 * 🇨🇦 Denis Shapovalov → replaced by 🇦🇷 Guido Pella
 * 🇩🇪 Jan-Lennard Struff → replaced by 🇮🇹 Marco Cecchinato
 * Botic van de Zandschulp → replaced by Marc-Andrea Hüsler

Seeds

 * Rankings are as of 8 May 2023.

Other entrants
The following pairs received wildcards into the doubles main draw:
 * 🇫🇷 Arthur Cazaux / 🇫🇷 Benoît Paire
 * 🇷🇸 Ivan Sabanov / 🇷🇸 Matej Sabanov

Withdrawals

 * 🇮🇳 Rohan Bopanna / 🇦🇺 Matthew Ebden → replaced by 🇧🇴 Hugo Dellien / 🇦🇷 Guido Pella
 * Tallon Griekspoor / 🇰🇿 Aleksandr Nedovyesov → replaced by 🇪🇨 Diego Hidalgo / 🇺🇸 Ben Shelton
 * 🇺🇸 Nathaniel Lammons / 🇺🇸 Jackson Withrow → replaced by 🇷🇸 Nikola Ćaćić / 🇺🇸 Nathaniel Lammons
 * Hugo Nys / 🇵🇱 Jan Zieliński → replaced by Ariel Behar / 🇧🇷 Marcelo Demoliner