Bayer 04 Leverkusen, officially known as Bayer 04 Leverkusen Fußball GmbH and commonly known as Bayer Leverkusen or simply Leverkusen, is a German professional football club based in Leverkusen, North Rhine-Westphalia.
- Founded: 1 July 1904, Leverkusen, Germany
- Arena/Stadium: BayArena
- Location: Leverkusen, Germany
- Owner: Bayer
