Women's Army Auxiliary Corps

The Women's Army Auxiliary Corps (WAAC) can refer to:


 * Women's Army Auxiliary Corps (Britain), a branch of the British military in the First World War
 * Women's Auxiliary Corps (India), India branch WWII
 * Women's Auxiliary Army Corps (New Zealand), a branch of the New Zealand military in World War II
 * prior name of the Women's Army Corps, a branch of the U.S. military in World War II