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).[1]
See main article: 2023 Astana Open – Singles.
Adrian Mannarino def. 
Sebastian Korda, 4–6, 6–3, 6–2See main article: 2023 Astana Open – Doubles.
Nathaniel Lammons / Jackson Withrow def. Mate Pavić / 
John Peers, 7–6(7–4), 7–6(9–7)| Country | Player | Rank1 | Seed | |
|---|---|---|---|---|
| Tallon Griekspoor | 24 | 1 | ||
 Kazakhstan | Alexander Bublik | 28 | 2 | |
 Argentina | Sebastián Báez | 29 | 3 | |
 Czech Republic | Jiří Lehečka | 30 | 4 | |
| United States | Sebastian Korda | 33 | 5 | |
| France | Adrian Mannarino | 34 | 6 | |
 Serbia | Laslo Djere | 37 | 7 | |
| Stan Wawrinka | 40 | 8 |
The following players received wildcards into the singles main draw:
The following players received entry from the qualifying draw:
Bernabé Zapata Miralles| Country | Player | Country | Player | Rank1 | Seed | |
|---|---|---|---|---|---|---|
 United Kingdom | Jamie Murray |  New Zealand | Michael Venus | 50 | 1 | |
| United States | Nathaniel Lammons | United States | Jackson Withrow | 55 | 2 | |
| United Kingdom | Lloyd Glasspool |  Finland | Harri Heliövaara | 61 | 3 | |
| Mate Pavić | Australia | John Peers | 61 | 4 |
The following pairs received wildcards into the doubles main draw:
Marcelo Demoliner / Matwé Middelkoop → replaced by Ariel Behar / Adam Pavlásek
