2019 Challenger Banque Nationale de Gatineau – Men's doubles

Robert Galloway and Bradley Klahn were the defending champions but chose not to defend their title.

Alex Lawson and Marc Polmans won the title after defeating Hans Hach Verdugo and Dennis Novikov 6–4, 3–6, [10–7] in the final.

Seeds
• # 🇻🇪 Roberto Maytín / 🇺🇸 Jackson Withrow (semifinals)

• # 🇺🇸 Hunter Reese / 🇨🇦 Adil Shamasdin (quarterfinals)

• # 🇺🇸 Alex Lawson / 🇦🇺 Marc Polmans (champions)

• # 🇺🇸 John Paul Fruttero / Ruben Gonzales (quarterfinals)