The Woman's Peace Party (WPP) was an American pacifist and feminist organization formally established in January 1915 in response to World War I. The organization is remembered as the first American peace organization to make use of direct action tactics such as public demonstration. The Woman's Peace Party became the American section of an international organization known as the International Committee of Women for Permanent Peace later in 1915, a group which later changed its name to the Women's International League for Peace and Freedom.