| Doubles | |
|---|---|
| 2023 Ostra Group Open | |
| Champions |  Robert Galloway  Miguel Ángel Reyes-Varela |
| Runners-up |  Guido Andreozzi Guillermo Durán |
| Score | 7–5, 7–6(7–5) |
Alexander Erler and Lucas Miedler were the defending champions [1] but chose not to defend their title.
Robert Galloway and Miguel Ángel Reyes-Varela won the title after defeating Guido Andreozzi and Guillermo Durán 7–5, 7–6(7–5) in the final.
Robert Galloway / Miguel Ángel Reyes-Varela (champions) Guido Andreozzi / Guillermo Durán (final)
Roman Jebavý / 
Philipp Oswald (quarterfinals)
Ivan Sabanov / Matej Sabanov (first round)| First round | Quarterfinals | Semifinals | Final | ||||||||||||||||||||||||
| 1 | R Galloway MÁ Reyes-Varela | 6 | 6 | ||||||||||||||||||||||||
 L Johnson  S Verbeek | 3 | 4 | 1 | R Galloway MÁ Reyes-Varela | 4 | 6 | [10] | ||||||||||||||||||||
V Kopřiva  O Krutykh | 2 | 4 | Z Kolář A Pavlásek | 6 | 2 | [6] | |||||||||||||||||||||
| Z Kolář A Pavlásek | 6 | 6 | 1 | R Galloway MÁ Reyes-Varela | 6 | 6 | |||||||||||||||||||||
| 3 | R Jebavý P Oswald | 6 | 6 |  G Blancaneaux R Peniston | 4 | 1 | |||||||||||||||||||||
| P Nouza A Paulson | 3 | 4 | 3 | R Jebavý P Oswald | 4 | 4 | |||||||||||||||||||||
 K Drzewiecki S Walków | 6 | 3 | [8] | G Blancaneaux R Peniston | 6 | 6 | |||||||||||||||||||||
| G Blancaneaux R Peniston | 3 | 6 | [10] | 1 | R Galloway MÁ Reyes-Varela | 7 | 77 | ||||||||||||||||||||
| D Added T Arribagé | 5 | 6 | [6] | 2 | G Andreozzi G Durán | 5 | 65 | ||||||||||||||||||||
| WC | Hynek Bartoň P Rikl | 7 | 3 | [10] | WC | H Bartoň P Rikl | 4 | 3 | |||||||||||||||||||
| WC | J Menšík D Svrčina | 7 | 6 | WC | J Menšík D Svrčina | 6 | 6 | ||||||||||||||||||||
| 4 | I Sabanov M Sabanov | 5 | 4 | WC | J Menšík D Svrčina | 1 | 3 | ||||||||||||||||||||
 M Lībietis H Reese | 6 | 77 | 2 | G Andreozzi G Durán | 6 | 6 | |||||||||||||||||||||
| Alt |  ND Ionel A Jecan | 2 | 65 | M Lībietis H Reese | 4 | 4 | |||||||||||||||||||||
V Manafov  I Zelenay | 5 | 4 | 2 | G Andreozzi G Durán | 6 | 6 | |||||||||||||||||||||
| 2 | G Andreozzi G Durán | 7 | 6 | ||||||||||||||||||||||||
Andrés Molteni and Fernando Romboli were the defending champions, but both players chose not to participate.
Juan Sebastián Cabal and Robert Farah were the defending champions, but did not participate.
Guido Pella and Diego Schwartzman were the defending champions, but Schwartzman decided not to participate this year. Pella played alongside Andrés Molteni, but they lost to Guido Andreozzi and Sergio Galdós in the semifinals.
Daniele Bracciali and Potito Starace were the defending champions, but could not defend their title due to being banned from tennis for betting offences.
Ariel Behar and Fabiano de Paula were the defending champions but chose to defend their title with different partners. Behar partnered Attila Balázs but lost in the semifinals to Marcelo Arévalo and Miguel Ángel Reyes-Varela. De Paula partnered Sergio Galdós but lost in the first round to Hugo Dellien and Federico Zeballos.
James Cerretani and Philipp Oswald were the defending champions, but Cerretani chose to compete in Sofia instead. Oswald played alongside Treat Huey, but lost in the first round to Alessandro Motti and Stefano Travaglia.
James Cerretani and Max Schnur were the defending champions but chose not to defend their title.
Miguel Ángel Reyes-Varela and Blaž Rola were the defending champions but chose not to defend their title.
Marcelo Arévalo and Miguel Ángel Reyes-Varela were the defending champions but chose not to defend their title.
Guido Andreozzi and Guillermo Durán were the defending champions but only Andreozzi chose to defend his title, partnering Andrés Molteni. Andreozzi successfully defended his title.
Hugo Dellien and Guillermo Durán were the defending champions but only Dellien chose to defend his title, partnering Federico Zeballos. Dellien and Zeballos withdrew before their quarterfinal match.
Leander Paes and Miguel Ángel Reyes-Varela were the defending champions but only Reyes-Varela chose to defend his title, partnering Marcelo Arévalo. Reyes-Varela lost in the semifinals to Orlando Luz and Luis David Martínez.
Guido Andreozzi and Guillermo Durán were the defending champions but chose not to defend their title.
Guido Andreozzi and Guillermo Durán were the defending champions but chose not to defend their title.
Sadio Doumbia and Fabien Reboul were the defending champions and successfully defended their title, defeating Guido Andreozzi and Guillermo Durán 7–5, 6–3 in the final.
This was the first edition of the tournament.
Íñigo Cervantes and Oriol Roca Batalla were the defending champions but chose not to defend his title.
Hans Hach Verdugo and Austin Krajicek were the defending champions but only Hach Verdugo chose to defend his title, partnering Miguel Ángel Reyes-Varela. Hach Verdugo lost in the semifinals to André Göransson and Ben McLachlan.
Robert Galloway and Jackson Withrow were the defending champions but only Galloway chose to defend his title, partnering Miguel Ángel Reyes-Varela. Galloway lost in the quarterfinals to Guido Andreozzi and Guillermo Durán.
The 2023 Ostra Group Open was a professional tennis tournament played on clay courts. It was the 20th edition of the tournament which was part of the 2023 ATP Challenger Tour. It took place in Ostrava, Czech Republic between 24 and 30 April.