Joachim-Friedrich Lang was a German officer, finally Generalleutnant of the Wehrmacht during World War II.

Born on 14 September 1899 in Montigny-lès-Metz, Alsace-Lorraine, Joachim-Friedrich Lang joined the Imperial German Army during World War I.

Following the outbreak of World War II, Lang took part in the invasion of France and then served on the Eastern Front.

He was promoted to the rank of Generalmajor (Major General) on 1 October 1944, near Königsberg.

Then, Lang fought near Pillau, before being killed in action on 16 April 1945.