| Doubles | |
|---|---|
| 2019 Garden Open | |
| Champions |  Philipp Oswald  Filip Polášek |
| Runners-up |  Nikola Čačić  Adam Pavlásek |
| Final score | Walkover |
Kevin Krawietz and Andreas Mies were the defending champions but chose not to defend their title. [1]
Philipp Oswald and Filip Polášek won the title by walkover after Nikola Čačić and Adam Pavlásek withdrew before the final.
Philipp Oswald / Filip Polášek (champions)
Hans Hach Verdugo / 
Ante Pavić (first round)
Jonathan Eysseric / Antonio Šančić (quarterfinals)
Tomislav Brkić / Tomislav Draganja (semifinals)| First round | Quarterfinals | Semifinals | Final | ||||||||||||||||||||||||
| 1 | P Oswald F Polášek | 6 | 6 | ||||||||||||||||||||||||
 S Caruso J Ocleppo | 3 | 2 | 1 | P Oswald F Polášek | 6 | 6 | |||||||||||||||||||||
 K Drzewiecki S Walków | 6 | 6 | K Drzewiecki S Walków | 4 | 2 | ||||||||||||||||||||||
 F Agamenone  F Romboli | 3 | 2 | 1 | P Oswald F Polášek | 79 | 6 | |||||||||||||||||||||
| 4 | T Brkić T Draganja | 4 | 6 | [10] | 4 | T Brkić T Draganja | 67 | 3 | |||||||||||||||||||
| J Kovalík D Petrović | 6 | 1 | [8] | 4 | T Brkić T Draganja | 6 | 6 | ||||||||||||||||||||
| WC | F Cobolli F Passaro | 3 | 3 |  U Blanch GM Moroni | 2 | 2 | |||||||||||||||||||||
| U Blanch GM Moroni | 6 | 6 | 1 | P Oswald F Polášek | w/o | ||||||||||||||||||||||
 L Margaroli  M Vervoort | 6 | 6 | N Čačić A Pavlásek | ||||||||||||||||||||||||
| WC | Andrea Giallanza Alessandro Oneili | 4 | 0 | L Margaroli M Vervoort | 7 | 4 | [10] | ||||||||||||||||||||
| ITF |  B Lock CJ Lock | 1 | 3 | 3 | J Eysseric A Šančić | 5 | 6 | [1] | |||||||||||||||||||
| 3 | J Eysseric A Šančić | 6 | 6 | L Margaroli M Vervoort | 710 | 2 | [3] | ||||||||||||||||||||
| N Čačić A Pavlásek | 6 | 4 | [10] | N Čačić A Pavlásek | 68 | 6 | [10] | ||||||||||||||||||||
| Alt | G Jacq  S Mansouri | 4 | 6 | [5] | N Čačić A Pavlásek | 77 | 3 | [11] | |||||||||||||||||||
| ITF | R Bonadio  Peter Heller | 6 | 6 | ITF | R Bonadio P Heller | 64 | 6 | [9] | |||||||||||||||||||
| 2 | H Hach Verdugo A Pavić | 1 | 4 | ||||||||||||||||||||||||
Marc López and David Marrero were the defending champions, but lost in the first round to Andreas Beck and Christopher Kas.
František Čermák and Michal Mertiňák were the defending champions but Mertiňák decided not to participate.
Filip Polášek and Lukáš Rosol were the defending champions but decided not to participate together. Polášek partnered up Julian Knowle, while Rosol decided not to participate.
Christopher Kas and Philipp Kohlschreiber won the title winning against Knowle and Polášek by 7–5, 6–4.
Marcos Baghdatis and Mikhail Youzhny were the defending champions but retired in the second round because of Baghdatis's foot injury.
Julian Knowle and Filip Polášek won the title, defeating Ivan Dodig and Mate Pavić 6–3, 6–3 in the final.
Sander Arends and Antonio Šančić 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.
Attila Balázs and Gonçalo Oliveira 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.
Denys Molchanov and Igor Zelenay were the defending champions but lost in the semifinals to Jiří Lehečka and Jiří Veselý.
Elliot Benchetrit and Geoffrey Blancaneaux were the defending champions but only Benchetrit chose to defend his title, partnering Johan Tatlot. Benchetrit and Tatlot withdrew before the tournament began.
Marcelo Demoliner and Santiago González were the defending champions, but chose not to participate together. Demoliner played alongside Divij Sharan, but lost in the quarterfinals to Denys Molchanov and Igor Zelenay. González teamed up with Aisam-ul-Haq Qureshi, but lost in the first round to Ivan Dodig and Filip Polášek.
Matteo Berrettini and Daniele Bracciali were the defending champions, but chose not to participate this year.
Roman Jebavý and Andrés Molteni were the defending champions, but chose not to participate together. Jebavý played alongside Matwé Middelkoop but lost in the semifinals to Philipp Oswald and Filip Polášek. Molteni partnered Leonardo Mayer but lost in the first round to Oliver Marach and Jürgen Melzer.
Ivan Dodig and Filip Polášek were the defending champions but lost in the first round to Pablo Carreño Busta and Alex de Minaur.
Philipp Oswald and Filip Polášek were the defending champions but chose not to defend their title.
Philipp Oswald and Filip Polášek were the defending champions, but chose to participate with different partners. Oswald partnered Marcus Daniell and lost in the quarterfinals to Marcel Granollers and Horacio Zeballos. Polášek partnered Ivan Dodig and lost in the semifinals to Austin Krajicek and Franko Škugor.
Philipp Oswald and Filip Polášek were the defending champions but chose not to defend their title.
Rohan Bopanna and Wesley Koolhof were the defending champions, but they decided not to participate this year.
Philipp Oswald and Filip Polášek were the defending champions but chose not to defend their title.
Philipp Oswald and Filip Polášek were the defending champions but chose not to defend their title.