The 2017–18 Borussia Mönchengladbach season was the 118th season in the football club's history and 10th consecutive and 50th overall season in the top flight of German football, the Bundesliga, having been promoted from the 2.

In addition to the domestic league, Borussia Mönchengladbach also participated in this season's edition of the domestic cup, the DFB-Pokal.

The season covered a period from 1 July 2017 to 30 June 2018.

Note: Flags indicate national team as defined under FIFA eligibility rules; some limited exceptions apply.

Players may hold more than one non-FIFA nationality.