The 2004 Deutsche Tourenwagen Masters was the eighteenth season of premier German touring car championship and also fifth season under the moniker of Deutsche Tourenwagen Masters since the series' resumption in 2000. There were 10 championship race weekend with one round each, plus a non-championship round at the streets of Shanghai. Originally each track hosted one race each with the exception of Hockenheimring. Each track hosted one race, with the exception of Hockenheim, which hosted two. As in 2003 each weekend compromised one race of circa one hour and with two compulsory pit stops for each contender.

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.