2018 Challenger Banque Nationale de Gatineau

The 2018 Challenger Banque Nationale de Gatineau was a professional tennis tournament played on outdoor hard courts. It was the 3rd edition of the tournament for men and the 5th for women, and it was part of the 2018 ATP Challenger Tour and the 2018 ITF Women's Circuit. It took place in Gatineau, Canada between July 16 and 22, 2018.

Seeds

 * 1 Rankings are as of July 2, 2018.

Other entrants
The following players received wildcards into the singles main draw:
 * 🇨🇦 Alexis Galarneau
 * 🇨🇦 Pavel Krainik
 * 🇨🇦 Samuel Monette
 * 🇨🇦 Benjamin Sigouin

The following players received entry from the qualifying draw:
 * 🇰🇷 Chung Yun-seong
 * 🇦🇺 Jacob Grills
 * 🇮🇱 Edan Leshem
 * 🇻🇪 Ricardo Rodríguez

Seeds

 * 1 Rankings are as of July 2, 2018.

Other entrants
The following players received wildcards into the singles main draw:
 * 🇨🇦 Bianca Andreescu
 * 🇨🇦 Ariana Arseneault
 * 🇨🇦 Layne Sleeth
 * 🇨🇦 Alexandra Vagramov

The following player received entry as a special exempt:
 * 🇦🇺 Maddison Inglis

The following players received entry from the qualifying draw:
 * 🇬🇧 Alicia Barnett
 * 🇬🇧 Jodie Anna Burrage
 * 🇺🇸 Nadja Gilchrist
 * 🇯🇵 Nagi Hanatani
 * 🇯🇵 Mai Hontama
 * 🇺🇸 Raveena Kingsley
 * 🇨🇦 Catherine Leduc
 * 🇺🇸 Jada Robinson

The following player received entry as a lucky loser:
 * 🇬🇧 Samantha Murray

Men's singles

 * 🇺🇸 Bradley Klahn def. 🇫🇷 Ugo Humbert 6–3, 7–6(7–5).

Women's singles

 * 🇦🇺 Astra Sharma def. 🇲🇽 Victoria Rodríguez, 3–6, 6–4, 6–3

Men's doubles

 * 🇺🇸 Robert Galloway / 🇺🇸 Bradley Klahn def. Darian King / 🇨🇦 Peter Polansky 7–6(7–4), 4–6, [10–8].

Women's doubles

 * 🇨🇦 Bianca Andreescu / 🇨🇦 Carson Branstine def. Hsu Chieh-yu / 🇲🇽 Marcela Zacarías, 4–6, 6–2, [10–4]