FSV Mainz 05 season was the 114th season in the football club's history and 10th consecutive and 13th overall season in the top flight of German football, the Bundesliga, having been promoted from the 2.

In addition to the domestic league, Mainz 05 also participated in this season's edition of the domestic cup, the DFB-Pokal.

The season covered a period from 1 July 2018 to 30 June 2019.

Win Draw Loss Win Draw Loss Last updated: 25 May 2019 Source: Competitions Last updated: 25 May 2019.

Source: Bundesliga Last updated: 13 April 2019Source: Competitions