| Doubles | |
|---|---|
| 2018 Challenger Banque Nationale de Drummondville | |
| Champions |  Joris De Loore  Frederik Nielsen |
| Runners-up |  Luis David Martínez  Filip Peliwo |
| Final score | 6–4, 6–3 |
Sam Groth and Adil Shamasdin were the defending champions but only Shamasdin chose to defend his title, partnering Frank Dancevic. Dancevic and Shamasdin withdrew in the semifinals.
Joris De Loore and Frederik Nielsen won the title after defeating Luis David Martínez and Filip Peliwo 6–4, 6–3 in the final.
Matt Reid / John-Patrick Smith (first round)
Luke Bambridge / Joe Salisbury (first round)
Evan King / Nathan Pasha (first round)
Ante Pavić / Franko Škugor (quarterfinals)| First round | Quarterfinals | Semifinals | Final | ||||||||||||||||||||||||
| 1 | M Reid J-P Smith | 62 | 6 | [3] | |||||||||||||||||||||||
L Broady  R Roelofse | 77 | 3 | [10] | L Broady R Roelofse | 3 | 5 | |||||||||||||||||||||
| WC | Samuel Monette B Schnur | LD Martínez F Peliwo | 6 | 7 | |||||||||||||||||||||||
| LD Martínez F Peliwo | w/o | LD Martínez F Peliwo | 64 | 6 | [10] | ||||||||||||||||||||||
| 4 | A Pavić F Škugor | 5 | 6 | [10] | N Lammons A Lawson | 77 | 4 | [8] | |||||||||||||||||||
 B Bonzi G Jacq | 7 | 4 | [8] | 4 | A Pavić F Škugor | 2 | 77 | [6] | |||||||||||||||||||
| N Lammons A Lawson | 6 | 77 | N Lammons A Lawson | 6 | 65 | [10] | |||||||||||||||||||||
| WC | Taha Baadi Chih Chi Huang | 3 | 63 | LD Martínez F Peliwo | 4 | 3 | |||||||||||||||||||||
| WC | Justin Boulais Pavel Krainik | 67 | 65 | J De Loore F Nielsen | 6 | 6 | |||||||||||||||||||||
 A González  N Kuhn | 79 | 77 | A González N Kuhn | 6 | 5 | [8] | |||||||||||||||||||||
| PR | F Dancevic A Shamasdin | 6 | 6 | PR | F Dancevic A Shamasdin | 4 | 7 | [10] | |||||||||||||||||||
| 3 | E King N Pasha | 1 | 4 | PR | F Dancevic A Shamasdin | ||||||||||||||||||||||
 R Gonzales H Reese | 6 | 6 | J De Loore F Nielsen | w/o | |||||||||||||||||||||||
| Alt | Antoine Escoffier H Grenier | 2 | 4 | R Gonzales H Reese | 4 | 3 | |||||||||||||||||||||
| J De Loore F Nielsen | 5 | 6 | [10] | J De Loore F Nielsen | 6 | 6 | |||||||||||||||||||||
| 2 | L Bambridge J Salisbury | 7 | 4 | [8] | |||||||||||||||||||||||
Nikolay Davydenko was the defending champion, but chose not to participate that year due to a left heel injury.
Arnaud Clément and Édouard Roger-Vasselin were the defending champions, but they elected to defend their title with different partners.
Clément partnered up with David Guez, but they withdrew before their quarterfinal match against Harsh Mankad and Adil Shamasdin.
Roger-Vasselin partnered up with Nicolas Mahut and they won in the final 6–2, 6–4, over Mankad and Shamasdin.
Johan Brunström and Jarkko Nieminen were the defending champions, but Nieminen decided not to participate.
Brunström played alongside Adil Shamasdin, but they were eliminated in the semifinals by Kas and Peya.
Kevin Anderson was the defending champion, but lost to John Isner in the quarterfinals.
Robert Lindstedt and Nenad Zimonjić were the defending champions but decided not to participate together. Lindstedt played alongside Łukasz Kubot, but lost in the first round to Julien Benneteau and Édouard Roger-Vasselin. Zimonjić teamed up with Daniel Nestor, but lost in the quarterfinals to Michaël Llodra and Nicolas Mahut.
Purav Raja and Divij Sharan were the defending champions, but decided not to participate together. Raja played alongside Marcelo Demoliner, while Sharan teams up with Adil Shamasdin. The two teams met in the quarterfinals, with Shamasdin and Sharan winning the match. Shamasdin and Sharan lost to Samuel Groth and Chris Guccione in the semifinals.
Groth and Guccione went on to win the title, defeating [[]] and Juan Sebastián Cabal in the final, 7–6(7–5), 6–7(3–7), [11–9].
Frank Dancevic and Peter Polansky were the defending champions, but Dancevic chose not to compete.
Polansky paired with Adil Shamasdin and they won the title, defeating Chase Buchanan and James McGee in the final 6–4, 6–2.
Edward Corrie and Daniel Smethurst were the defending champions, however Smethurst chose not to participate. Corrie partnered Frederik Nielsen but lost in the first round.
Marin Čilić was the two-time defending champion, but withdrew before the tournament started due to an arm injury.
Edward Corrie and Daniel Smethurst were the defending champions, having won the event in 2014 in Rimouski, but Smethurst decided not to participate this year. Corrie partnered with Alex Kuznetsov, but lost in the semifinals to Philip Bester and Chris Guccione.
Jean-Julien Rojer and Horia Tecău were the defending champions, but chose not to participate this year.
Rameez Junaid and Adil Shamasdin won the title, defeating Rohan Bopanna and Florin Mergea in the final, 3–6, 6–2, [10–7].
Jesse Huta Galung and Stéphane Robert were the defending champions, but Robert chose not to participate this year. Huta Galung was scheduled to play alongside Pablo Andújar in the qualifying draw, but withdrew with a right calf injury.
Dominique Coene and Kristof Vliegen were the defending champions, but they did not compete in the Juniors this year.
Rameez Junaid and Adil Shamasdin were the defending champions, but chose not to compete this year.
Guillermo Durán and Máximo González won the title, defeating Marin Draganja and Aisam-ul-Haq Qureshi in the final, 6–2, 3–6, [10–6].
Rajeev Ram was the defending champion, but lost in the second round to Dudi Sela.
Santiago González and Mate Pavić were the defending champions but only González chose to defend his title, partnering Artem Sitak. González lost in the first round to Marcelo Arévalo and Fabrício Neis.
Wesley Koolhof and Matwé Middelkoop were the defending champions but chose not to defend their title.
Andrés Molteni and Horacio Zeballos were the defending champions, but Zeballos chose to compete in Hamburg instead. Molteni played alongside Adil Shamasdin, but lost in the quarterfinals to Wesley Koolhof and Artem Sitak.
Marcel Granollers and Marcin Matkowski were the defending champions, but Granollers chose to compete in Beijing instead. Matkowski played alongside Aisam-ul-Haq Qureshi, but lost in the first round to Santiago González and Julio Peralta.
Andrés Molteni and Adil Shamasdin were the defending champions, but Shamasdin chose to play in Geneva instead. Molteni played alongside Guillermo Durán but lost in the second round to Nick Kyrgios and Jack Sock.