| Doubles | |
|---|---|
| 2023 Koblenz Open | |
| Champions |  Fabian Fallert Hendrik Jebens |
| Runners-up |  Jonathan Eysseric  Denys Molchanov |
| Score | 7–6(7–2), 6–3 |
Sander Arends and David Pel were the defending champions [1] but chose not to defend their title.
Fabian Fallert and Hendrik Jebens won the title after defeating Jonathan Eysseric and Denys Molchanov 7–6(7–2), 6–3 in the final.
Albano Olivetti / 
Hunter Reese (semifinals)
Philipp Oswald / 
Szymon Walków (quarterfinals)
Sriram Balaji / Jeevan Nedunchezhiyan (first round) Jonathan Eysseric / Denys Molchanov (final)| First round | Quarterfinals | Semifinals | Final | ||||||||||||||||||||||||
| 1 | A Olivetti H Reese | 6 | 77 | ||||||||||||||||||||||||
| WC | Florian Broska Felix Einig | 3 | 64 | 1 | A Olivetti H Reese | 77 | 2 | [13] | |||||||||||||||||||
| Niklas Schell Kai Wehnelt | 6 | 3 | [5] |  Z Kolář V Sachko | 63 | 6 | [11] | ||||||||||||||||||||
| Z Kolář V Sachko | 4 | 6 | [10] | 1 | A Olivetti H Reese | 5 | 1 | ||||||||||||||||||||
| 4 | J Eysseric D Molchanov | 7 | 6 | 4 | J Eysseric D Molchanov | 7 | 6 | ||||||||||||||||||||
| PR |  T de Bakker B Stevens | 5 | 2 | 4 | J Eysseric D Molchanov | 6 | 0 | [10] | |||||||||||||||||||
 L Broady  D Brown | 3 | 6 | [8] | WC | C Frantzen T Sandkaulen | 3 | 6 | [8] | |||||||||||||||||||
| WC | C Frantzen T Sandkaulen | 6 | 2 | [10] | 4 | J Eysseric D Molchanov | 62 | 3 | |||||||||||||||||||
| A Chandrasekar VS Prashanth | 2 | 6 | [10] | F Fallert H Jebens | 77 | 6 | |||||||||||||||||||||
| R Jebavý P Nouza | 6 | 3 | [7] | A Chandrasekar VS Prashanth | 1 | 1 | |||||||||||||||||||||
| F Fallert H Jebens | 1 | 77 | [10] | F Fallert H Jebens | 6 | 6 | |||||||||||||||||||||
| 3 | S Balaji J Nedunchezhiyan | 6 | 62 | [7] | F Fallert H Jebens | 6 | 6 | ||||||||||||||||||||
R Haase  Zh Zhang | 2 | 6 | [10] | R Haase Zh Zhang | 2 | 4 | |||||||||||||||||||||
| A Kadhe D Masur | 6 | 4 | [8] | R Haase Zh Zhang | 4 | 6 | [10] | ||||||||||||||||||||
| G Brouwer S Myneni | 0 | 5 | 2 | P Oswald S Walków | 6 | 4 | [7] | ||||||||||||||||||||
| 2 | P Oswald S Walków | 6 | 7 | ||||||||||||||||||||||||
Jonathan Eysseric and Jürgen Zopp were the defending champions but only Zopp chose to defend his title, partnering Matija Pecotić. Pecotić and Zopp lost in the first round to Chen Ti and Jason Jung.
Lee Hsin-han and Denys Molchanov were the defending champions but chose not to defend their title.
Pierre-Hugues Herbert and Albano Olivetti were the defending champions but only Olivetti chose to defend his title, partnering Kevin Krawietz. Olivetti lost in the first round to Roman Jebavý and Igor Zelenay.
Miguel Ángel Reyes-Varela and Max Schnur were the defending champions but chose not to defend their title.
Jonathan Eysseric and André Ghem were the defending champions but chose not to defend their title.
Marco Cecchinato and Matteo Donati were the defending champions but only Donati chose to defend his title, partnering Simone Bolelli. Donati lost in the first round to Nikola Milojević and Mohamed Safwat.
Pierre-Hugues Herbert and Adil Shamasdin were the defending champions but only Shamasdin chose to defend his title, partnering Sander Arends. Shamasdin lost in the quarterfinals to Dennis Novak and Tristan-Samuel Weissborn.
Tim Pütz and Jan-Lennard Struff were the defending champions but chose not to defend their title.
Raven Klaasen and Michael Venus were the defending champions, but lost in the first round to Jonathan Eysseric and Gilles Simon.
Denys Molchanov and Igor Zelenay were the defending champions but chose not to defend their title.
Julian Ocleppo and Andrea Vavassori were the defending champions but lost in the first round to Jonathan Eysseric and Andrei Vasilevski.
This was the first edition of the tournament.
Lukáš Klein and Alex Molčan were the defending champions but chose not to defend their title.
Orlando Luz and Felipe Meligeni Alves were the defending champions but only Meligeni Alves chose to defend his title, partnering Marcelo Demoliner. Meligeni Alves lost in the quarterfinals to Marco Bortolotti and Sergio Martos Gornés.
Zdeněk Kolář and Jiří Lehečka were the defending champions but chose not to defend their title.
Victor Vlad Cornea and Petr Nouza were the defending champions but chose to defend their title with different partners. Cornea partnered Sergio Martos Gornés but lost in the semifinals to Sander Arends and David Pel. Nouza partnered Vitaliy Sachko but lost in the first round to Cornea and Martos Gornés.
Albano Olivetti and David Vega Hernández were the defending champions but only Olivetti chose to defend his title, partnering Hunter Reese. Olivetti lost in the quarterfinals to Anirudh Chandrasekar and Arjun Kadhe.
Ivan Dodig and Austin Krajicek defeated Rohan Bopanna and Matthew Ebden in the final, 7–6(7–5), 2–6, [12–10] to win the doubles tennis title at the 2023 Rotterdam Open. The pair saved a champiomship point en route to the 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.
Luciano Darderi and Fernando Romboli were the defending champions but only Darderi chose to defend his title, partnering Thiago Agustín Tirante. Darderi lost in the first round to Rémy Bertola and Gianmarco Ferrari.