| Doubles | |
|---|---|
| 2018 Hungarian Challenger Open | |
| Champions |  Félix Auger-Aliassime  Nicola Kuhn |
| Runners-up |  Marin Draganja Tomislav Draganja |
| Final score | 2–6, 6–2, [11–9] |
Dino Marcan and Tristan-Samuel Weissborn were the defending champions but chose not to defend their title.
Félix Auger-Aliassime and Nicola Kuhn won the title after defeating Marin and Tomislav Draganja 2–6, 6–2, [11–9] in the final.
Marin Draganja / Tomislav Draganja (final)
Tomasz Bednarek / 
Kevin Krawietz (first round)
Scott Clayton / Jonny O'Mara (quarterfinals)
Rameez Junaid / 
Toshihide Matsui (quarterfinals)| First round | Quarterfinals | Semifinals | Final | ||||||||||||||||||||||||
| 1 | M Draganja T Draganja | 7 | 77 | ||||||||||||||||||||||||
| I Sabanov M Sabanov | 5 | 64 | 1 | M Draganja T Draganja | 3 | 6 | [10] | ||||||||||||||||||||
 Z Kolář A Pavlásek | 65 | 6 | [10] | G Panfil  V Uzhylovskyi | 6 | 3 | [1] | ||||||||||||||||||||
| G Panfil Volodymyr Uzhylovskyi | 77 | 1 | [12] | 1 | M Draganja T Draganja | 6 | 6 | ||||||||||||||||||||
| 4 | R Junaid T Matsui | 6 | 6 |  A Siljeström E Ymer | 4 | 3 | |||||||||||||||||||||
| WC |  G Kisgyörgy Z Piros | 3 | 2 | 4 | R Junaid T Matsui | 4 | 4 | ||||||||||||||||||||
 A Arnaboldi D Molchanov | 2 | 6 | [9] | A Siljeström E Ymer | 6 | 6 | |||||||||||||||||||||
| A Siljeström E Ymer | 6 | 3 | [11] | 1 | M Draganja T Draganja | 6 | 2 | [9] | |||||||||||||||||||
| F Auger-Aliassime N Kuhn | 7 | 0 | F Auger-Aliassime N Kuhn | 2 | 6 | [11] | |||||||||||||||||||||
| WC | V Šafránek M Valkusz | 5 | 0r | F Auger-Aliassime N Kuhn | 7 | 710 | |||||||||||||||||||||
| A Balázs G Borsos | 3 | 4 | 3 | S Clayton J O'Mara | 5 | 68 | |||||||||||||||||||||
| 3 | S Clayton J O'Mara | 6 | 6 | F Auger-Aliassime N Kuhn | 6 | 6 | |||||||||||||||||||||
| WC | L Gödry P Nagy | 6 | 6 | WC | L Gödry P Nagy | 4 | 2 | ||||||||||||||||||||
 N Milojević  A Šetkić | 2 | 2 | WC | L Gödry P Nagy | w/o | ||||||||||||||||||||||
 I Ivashka  D Novak | 6 | 6 | I Ivashka D Novak | ||||||||||||||||||||||||
| 2 | T Bednarek K Krawietz | 3 | 4 | ||||||||||||||||||||||||
Dustin Brown and Jonathan Marray were the defending champions but Marray decided not to participate.
Brown played alongside Christopher Kas, but lost in the quarterfinals to Mirza Bašić and Tomislav Brkić.
Bašić and Brkić defeated Karol Beck and Igor Zelenay 6–3, 7–5 in the final to continue their run as a wildcard pair, to win the title.
Tomasz Bednarek and Mateusz Kowalczyk were the defending champions but chose not to defend their title.
Johan Brunström and Andreas Siljeström were the defending champions but lost in the quarterfinals to Marin and Tomislav Draganja.
Sander Arends and Tristan-Samuel Weissborn were the defending champions but chose not to defend their title.
Marcelo Demoliner and Fabrício Neis were the defending champions but chose not to defend their title.
Rogério Dutra Silva and Andrés Molteni were the defending champions but chose not to defend their title.
Martin Kližan and David Marrero were the defending champions, but Kližan chose not to participate this year and Marrero chose to compete in Båstad instead.
This was a doubles tennis event in a professional tennis tournament held in Biella, Italy, in the summer of 2017.
Roman Jebavý and Jan Šátral were the defending champions but chose not to defend their title.
Federico Gaio and Stefano Napolitano were the defending champions but only Napolitano chose to defend his title, partnering Salvatore Caruso. Napolitano withdrew in the semifinals.
Kevin Krawietz and Albano Olivetti were the defending champions but lost in the first round to Aliaksandr Bury and Andreas Siljeström.
Jonathan Eysseric and Édouard Roger-Vasselin were the defending champions but only Eysseric chose to defend his title, partnering Andre Begemann. Eysseric successfully defended his title, defeating Tomasz Bednarek and David Pel 6–3, 6–4 in the final.
Julian Knowle and Adil Shamasdin were the defending champions but chose not to defend their title.
Marin and Tomislav Draganja were the defending champions but chose not to defend their title.
Sanchai and Sonchat Ratiwatana were the defending champions but chose not to defend their title.
Andreas Mies and Oscar Otte were the defending champions but only Mies chose to defend his title, partnering Kevin Krawietz. Mies successfully defended his title.
Ruan Roelofse and Christopher Rungkat were the defending champions but chose not to defend their title.
Ken and Neal Skupski were the defending champions but chose not to defend their title.
Marin and Tomislav Draganja were the defending champions but only Tomislav chose to defend his title, partnering Alessandro Giannessi. Tomislav Draganja lost in the quarterfinals to Andrej Martin and Hans Podlipnik Castillo.
Marin and Tomislav Draganja were the defending champions but only Tomislav chose to defend his title, partnering Nikola Čačić. Tomislav Draganja lost in the quarterfinals to Rameez Junaid and David Pel.