Max Gereon Alexander Thomas (4 August 1891 – 6 December 1945) was a German physician, SS-Gruppenführer and Generalleutnant of police in Nazi Germany. During the Second World War, he served as the commander of the Sicherheitspolizei (security police) and the Sicherheitsdienst (SD) in Belgium and northern France and in the Reichskommissariat Ukraine, where he also commanded Einsatzgruppe C. Implicated in Holocaust-related mass murders, he killed himself after the end of the war.
