Schlachtgeschwader 3 (SG 3) was a Luftwaffe close air support Geschwader during World War II.

It was formed on 18 October 1943 in Eleusis from Sturzkampfgeschwader 3.

[1] A special detachment was formed 13 June 1944 to 13 August 1944 referred to as Detachment Kuhlmey.

The detachment was built around elements of I./SG 3, I./SG 5, II./JG 54 and NaGr.1 Organization of the Luftwaffe during World War II