The Union Signal (formerly, The Woman's Temperance Union, Our Union) is a defunct American newspaper, established in 1883 in Chicago, Illinois. Focused on temperance, it was the organ of the Woman's Christian Temperance Union (WCTU), at one time, the largest women's organization in the United States. Initially, a weekly 16-page illustrated newspaper, it shifted location (Evanston, Illinois) and publishing schedule (to bimonthly to monthly to quarterly) before it ceased publication in 2016.