Hauptsturmführer was a Nazi Party paramilitary rank that was used in several Nazi organizations such as the SS, NSKK and the NSFK. The rank of Hauptsturmführer was a mid-grade company level officer and was the equivalent of a captain (Hauptmann) in the German Army and also the equivalent of captain in foreign armies. Hauptsturmführer was the most commonly held SS officer rank during the Second World War.

Hauptsturmführer was a Nazi Party paramilitary rank that was used in several Nazi organizations such as the SS, NSKK and the NSFK. The rank of Hauptsturmführer was a mid-grade company level officer and was the equivalent of a captain (Hauptmann) in the German Army and also the equivalent of captain in foreign armies. Hauptsturmführer was the most commonly held SS officer rank during the Second World War.