The 2017 Montreal Impact season was the club's 24th season of existence, and their sixth in Major League Soccer, the top tier of the Canadian soccer pyramid.
Montreal has ten MLS International Roster Slots for use in the 2017 season. They have the eight allotted from the league and two from trades with D.C. United and Vancouver Whitecaps FC. They traded 1 slot to Vancouver Whitecaps FC on July 21.
<small>Per Major League Soccer and club policies terms of the deals do not get disclosed.</small>
Players called for senior international duty during the 2017 season while under contract with the Montreal Impact.