2019 Challenger Banque Nationale de Gatineau

The 2019 Challenger Banque Nationale de Gatineau was a professional tennis tournament played on outdoor hard courts. It was the 4th edition of the tournament for men and the 6th for women, and it was part of the 2019 ATP Challenger Tour and the 2019 ITF Women's World Tennis Tour. It took place in Gatineau, Canada between July 15 and 21, 2019.

Seeds

 * 1 Rankings are as of July 1, 2019.

Other entrants
The following players received wildcards into the singles main draw:
 * 🇨🇦 Liam Draxl
 * 🇨🇦 Alexis Galarneau
 * 🇺🇸 Brandon Holt
 * 🇨🇦 Vasek Pospisil
 * 🇨🇦 Benjamin Sigouin

The following player received entry into the singles main draw using a protected ranking:
 * 🇪🇸 Carlos Gómez-Herrera

The following player received entry into the singles main draw as an alternate:
 * 🇦🇹 Maximilian Neuchrist

The following players received entry into the singles main draw using their ITF World Tennis Ranking:
 * 🇺🇸 Jordi Arconada
 * 🇬🇧 Evan Hoyt
 * 🇯🇵 Shintaro Imai
 * 🇹🇳 Skander Mansouri
 * Alejandro Tabilo

The following players received entry from the qualifying draw:
 * 🇦🇺 Jacob Grills
 * 🇺🇸 Dennis Novikov

The following player received entry as a lucky loser:
 * 🇬🇧 Brydan Klein

Seeds

 * 1 Rankings are as of July 1, 2019.

Other entrants
The following players received wildcards into the singles main draw:
 * 🇨🇦 Françoise Abanda
 * 🇨🇦 Petra Januskova
 * 🇨🇦 Layne Sleeth
 * 🇨🇦 Carol Zhao

The following players received entry into the singles main draw using their ITF World Tennis Ranking:
 * 🇺🇸 Dasha Ivanova
 * 🇷🇺 Anna Morgina
 * 🇺🇸 Madison Westby
 * 🇲🇽 Marcela Zacarías
 * 🇺🇸 Amy Zhu

The following players received entry from the qualifying draw:
 * 🇨🇦 Carson Branstine
 * 🇨🇦 Jada Bui
 * 🇺🇸 Victoria Emma
 * 🇺🇸 Haley Giavara
 * 🇲🇩 Alexandra Perper
 * 🇺🇸 Holly Verner

The following player received entry as a lucky loser:
 * 🇦🇺 Alexandra Osborne

Men's singles

 * 🇦🇺 Jason Kubler def. 🇫🇷 Enzo Couacaud 6–4, 6–4.

Women's singles

 * 🇨🇦 Leylah Annie Fernandez def. 🇨🇦 Carson Branstine, 3–6, 6–1, 6–2

Men's doubles

 * 🇺🇸 Alex Lawson / 🇦🇺 Marc Polmans def. 🇲🇽 Hans Hach Verdugo / 🇺🇸 Dennis Novikov 6–4, 3–6, [10–7].

Women's doubles

 * 🇨🇦 Leylah Annie Fernandez / 🇨🇦 Rebecca Marino def. Hsu Chieh-yu / 🇲🇽 Marcela Zacarías, 7–6(7–5), 6–3