2019–20 Bayer 04 Leverkusen season

The 2019–20 Bayer 04 Leverkusen season was the 116th season in the football club's history and 41st consecutive and overall season in the top flight of German football, the Bundesliga, having been promoted from the 2. Bundesliga Nord in 1979. In addition to the domestic league, Bayer Leverkusen also participated in this season's editions of the domestic cup, the DFB-Pokal, and the top-tier continental cup, the UEFA Champions League, as well as the UEFA Europa League. This was the 61st season for Leverkusen in the BayArena, located in Leverkusen, North Rhine-Westphalia, Germany. The season covered a period from 1 July 2019 to 10 August 2020.

Matches
The Bundesliga schedule was announced on 28 June 2019.

Appearances and goals
! colspan=14 style=background:#dcdcdc; text-align:center| Goalkeepers

! colspan=14 style=background:#dcdcdc; text-align:center| Defenders

! colspan=14 style=background:#dcdcdc; text-align:center| Midfielders

! colspan=14 style=background:#dcdcdc; text-align:center| Forwards

! colspan=14 style=background:#dcdcdc; text-align:center| Players transferred out during the season