The 2019 DTM was the thirty-third season of premier German touring car championship, first season under "Class 1" regulations era and also twentieth season under the moniker of DTM since the series' resumption in 2000. Mercedes-AMG withdrew from the championship after the 2018 season to focus on their Formula E entry. British sports car manufacturer Aston Martin replaced Mercedes-Benz, which marked the first non-German entry in 23 years when Italian car manufacturer Alfa Romeo last entered the series under the International Touring Car Series name in 1996. Defending champion Gary Paffett did not return to defend his title, as he moved to Formula E.

The Deutsche Tourenwagen Masters is a sports car racing series sanctioned by ADAC. The series is based in Germany, with rounds elsewhere in Europe. The series currently races a modified version of Group GT3 grand touring cars, replacing the silhouette later Class 1 touring cars of earlier years.