FC Union Berlin also participated in this season's edition of the domestic cup, the DFB-Pokal.

FC Union Berlin in the Stadion An der Alten Försterei, located in Köpenick, Berlin, Germany.

The season covers 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.