2023 Astana Open

The 2023 Astana Open was a professional men's tennis tournament to be held on indoor hard courts. It was the fourth edition of the Astana Open and part of the ATP Tour 250 Series of the 2023 ATP Tour (downgraded from ATP Tour 500 status in 2022).

Singles

 * 🇫🇷 Adrian Mannarino def. 🇺🇸 Sebastian Korda, 4–6, 6–3, 6–2

Doubles

 * 🇺🇸 Nathaniel Lammons / 🇺🇸 Jackson Withrow def. Mate Pavić / 🇦🇺 John Peers, 7–6(7–4), 7–6(9–7)

Seeds

 * Rankings are as of 18 September 2023.

Other entrants
The following players received wildcards into the singles main draw:
 * 🇰🇿 Mikhail Kukushkin
 * 🇷🇸 Hamad Medjedovic
 * Alexander Shevchenko

The following players received entry from the qualifying draw:
 * Egor Gerasimov
 * Alibek Kachmazov
 * 🇦🇹 Jurij Rodionov
 * 🇯🇵 Sho Shimabukuro

Withdrawals

 * Borna Ćorić → replaced by 🇪🇸 Bernabé Zapata Miralles
 * Novak Djokovic

Seeds

 * Rankings are as of 18 September 2023

Other entrants
The following pairs received wildcards into the doubles main draw:
 * 🇰🇿 Alexander Bublik / Daniil Golubev
 * Egor Gerasimov / 🇰🇿 Mikhail Kukushkin

Withdrawals

 * 🇧🇷 Marcelo Demoliner / Matwé Middelkoop → replaced by  Ariel Behar / 🇨🇿 Adam Pavlásek