Margaret E. Winslow (1836-1936) was an American activist, newspaper editor, and author of several temperance books. She served at two separate times, and during the longest period of any editor-in-chief of Our Union, the national organ of the Woman's Christian Temperance Union (WCTU). It was a burst of inspiration from Winslow, relative to its simplicity and purity, which at the National WCTU Convention in Chicago determined the union to wear the white ribbon as a badge rather than the red, white, and blue which was strongly urged by many.