Abt Sportsline is an auto racing and auto tuning company based in Kempten im Allgäu, Germany. Abt mainly deals with Audi and the related primary Volkswagen Group brands—Volkswagen, Škoda, and SEAT—modifying them by using sports-type suspensions, engine power upgrades, lightweight wheels, aerodynamic components and more. It has been active in DTM for more than a decade. After the death of their father Johann in 2003, the company with 170 employees in their headquarters in Kempten was run by the brothers Hans-Jürgen Abt (born 1962, Managing Director) and Christian Abt. Since 2011, Hans-Jürgen Abt has run the company.
From 2014 to 2021, they ran a team under the Audi Sport banner in the FIA Formula E World Championship for drivers Lucas di Grassi, Daniel Abt and René Rast. At the 2014 Beijing ePrix, di Grassi became the first driver to win an open-wheel motorsport race in an all-electric car. Ultimately, the team finished third in the first teams' championship. After leaving the championship in 2022, they returned without the Audi partnership for the 2022–23 season.