The 2011 ADAC GT Masters season was the fifth season of the ADAC GT Masters, the grand tourer-style sports car racing founded by the German automobile club ADAC. It began on 24 April at Motorsport Arena Oschersleben and finished on 2 October at Hockenheim after eight double-header meetings. Dino Lunardi and Alexandros Margaritis claimed the championship title.

Alexandros "Alex" Margaritis is a Greek-German racing driver who is best known for competing in the German-based Deutsche Tourenwagen Masters touring car championship. Prior to that, his career had focused on formula single seater racing in Europe. Margaritis has dual nationality as a result of his place of birth and Greek parentage.