| Men's doubles | |
|---|---|
| 2023 Slovak Open | |
| Champions |  Sriram Balaji  Andre Begemann |
| Runners-up |  Andrey Golubev  Denys Molchanov |
| Score | 6–3, 5–7, [10–8] |
Denys Molchanov and Aleksandr Nedovyesov were the defending champions [1] but only Molchanov chose to defend his title, partnering Andrey Golubev. Molchanov lost in the final to Sriram Balaji and Andre Begemann.
Balaji and Begemann won the title after defeating Golubev and Molchanov 6–3, 5–7, [10–8] in the final.
Romain Arneodo / 
Sam Weissborn (quarterfinals)
Ariel Behar / 
Adam Pavlásek (semifinals) Andrey Golubev / Denys Molchanov (final) Constantin Frantzen / Hendrik Jebens (semifinals)| First round | Quarterfinals | Semifinals | Final | ||||||||||||||||||||||||
| 1 | R Arneodo S Weissborn | 1 | 6 | [10] | |||||||||||||||||||||||
 P Niklas-Salminen  B Stevens | 6 | 3 | [6] | 1 | R Arneodo S Weissborn | 62 | 6 | [8] | |||||||||||||||||||
| PR | S Balaji A Begemann | 6 | 3 | [10] | PR | S Balaji A Begemann | 77 | 3 | [10] | ||||||||||||||||||
| A Paulson V Sachko | 3 | 6 | [6] | PR | S Balaji A Begemann | 77 | 7 | ||||||||||||||||||||
| 4 | C Frantzen H Jebens | 6 | 6 | 4 | C Frantzen H Jebens | 64 | 5 | ||||||||||||||||||||
| S Arends Mick Veldheer | 3 | 2 | 4 | C Frantzen H Jebens | 4 | 6 | [12] | ||||||||||||||||||||
| WC |  Miloš Karol Peter Benjamín Privara | 6 | 3 | [10] | WC | M Karol PB Privara | 6 | 3 | [10] | ||||||||||||||||||
 T Arribagé L Sanchez | 4 | 6 | [4] | PR | S Balaji A Begemann | 6 | 5 | [10] | |||||||||||||||||||
| WC | Lukáš Pokorný I Zelenay | 65 | 63 | 3 | A Golubev D Molchanov | 3 | 7 | [8] | |||||||||||||||||||
 I Liutarevich V Manafov | 77 | 77 | I Liutarevich V Manafov | 79 | 63 | [15] | |||||||||||||||||||||
 P Tsitsipas S Verbeek | 62 | 4 | 3 | A Golubev D Molchanov | 67 | 77 | [17] | ||||||||||||||||||||
| 3 | A Golubev D Molchanov | 77 | 6 | 3 | A Golubev D Molchanov | 6 | 6 | ||||||||||||||||||||
| Y Bhambri P Oswald | 6 | 6 | 2 | A Behar A Pavlásek | 3 | 3 | |||||||||||||||||||||
 K Drzewiecki S Walków | 2 | 3 | Y Bhambri P Oswald | 64 | 6 | [8] | |||||||||||||||||||||
| R Jebavý P Nouza | 64 | 3 | 2 | A Behar A Pavlásek | 77 | 4 | [10] | ||||||||||||||||||||
| 2 | A Behar A Pavlásek | 77 | 6 | ||||||||||||||||||||||||
Denys Petrovych Molchanov is a Ukrainian tennis player playing on the ATP Challenger Tour winning 15 singles and 66 doubles titles. He has also won one ATP doubles title. On 5 January 2015 he reached his highest ATP singles ranking of World No. 169, whilst his highest doubles ranking of No. 63 was reached on 22 July 2019. He also played for the Ukraine Davis Cup team.
Konstantin Kravchuk and Denys Molchanov successfully defended their title, defeating Karol Beck and Kamil Čapkovič 6–4, 6–3 in the final.
Konstantin Kravchuk and Denys Molchanov won the title, defeating Andrey Golubev and Yuri Schukin 6–3, 6–4 in the final.
Harri Heliövaara and Denys Molchanov were the defending champions but Heliövaara decided not to participate.
Molchanov played alongside Uladzimir Ignatik.
Andre Begemann and Martin Emmrich won the title by defeating Rameez Junaid and Frank Moser 6–7(2–7), 7–6(7–2), [10–8] in the final.
Martin Emmrich and Christopher Kas were the defending champions, but chose not to participate together. Emmrich played alongside Lukáš Rosol, but lost to Daniele Bracciali and Andrey Golubev in the semifinals. Kas teamed up with Philipp Kohlschreiber, but lost to Henri Kontinen and Jarkko Nieminen in the quarterfinals.
Kontinen and Nieminen won the title, defeating Bracciali and Golubev in the final, 6–1, 6–4.
Andrey Kuznetsov and Aleksandr Nedovyesov were the defending champions, but only Aleksandr Nedovyesov returned to defend his title, partnering up with Denys Molchanov.
Matteo Donati and Andrey Golubev beat second seeds Denys Molchanov and Aleksandr Nedovyesov 3–6, 7–6(7–5), [10–1]
Ariel Behar and Andrey Golubev were the defending champions but only Behar chose to defend his title, partnering Aliaksandr Bury. Behar lost in the quarterfinals to Victor Vlad Cornea and Zdeněk Kolář.
Sanchai and Sonchat Ratiwatana were the defending champions but chose not to defend their title.
Roman Jebavý and Antonio Šančić were the defending champions but only Jebavý chose to defend his title, partnering Florin Mergea. Jebavý lost in the first round to Denys Molchanov and Igor Zelenay.
Julian Knowle and Igor Zelenay were the defending champions but only Zelenay chose to defend his title, partnering Denys Molchanov. Zelenay lost in the quarterfinals to Andre Begemann and Dustin Brown.
Gong Maoxin and Zhang Ze were the defending champions but lost in the first round to Treat Huey and Nathaniel Lammons.
Fabrice Martin and Hugo Nys were the defending champions but chose not to defend their title.
Quentin Halys and Tristan Lamasine were the defending champions but only Halys chose to defend his title, partnering Lucas Pouille. Halys lost in the quarterfinals to Purav Raja and Tristan-Samuel Weissborn.
Andrey Golubev and Aleksandr Nedovyesov were the defending champions but lost in the semifinals to Szymon Walków and Jan Zieliński.
Jesper de Jong and Bart Stevens were the defending champions but chose not to defend their title.
Nicolás Barrientos and Miguel Ángel Reyes-Varela were the defending champions but chose to defend their title with different partners. Barrientos partnered Diego Hidalgo but lost in the quarterfinals to Victor Vlad Cornea and Philipp Oswald. Reyes-Varela partnered Jonathan Eysseric but lost in the quarterfinals to Andrey Golubev and Denys Molchanov.
Sadio Doumbia and Fabien Reboul were the defending champions but chose not to defend their title.
Nathaniel Lammons and Jackson Withrow were the defending champions but chose not to defend their title.
Vladyslav Manafov and Oleg Prihodko were the defending champions but they chose to defend their title with different partners. Manafov partnered Ivan Liutarevich but lost in the first round to Andrey Golubev and Denys Molchanov. Prihodko partnered Denis Klok but lost in the first round to Viktor Durasovic and Akira Santillan.
The 2023 Slovak Open was a professional tennis tournament played on hard courts. It was the 25th edition of the tournament which was part of the 2023 ATP Challenger Tour and the tenth edition of the tournament which was part of the 2023 ITF Women's World Tennis Tour. It took place in Bratislava, Slovakia between 9 and 15 October 2023 for the men and 30 October and 5 November for the women.