Army Group A was the name of a German Army Group during World War II.

During the German invasion of the Low Countries and France Army Group A was the southern attacking Army Group.

In 1942 Army Group South in Russia (Eastern Front) was split into Army Groups A and B.

On the 25 January 1945 Hitler renamed three army groups. Army Group North became Army Group Courland; Army Group Centre became Army Group North and Army Group A became Army Group Centre.