Margaret Anderson Watts (née , Anderson; September 3, 1832 – April 30, 1905) was an American social reformer in the temperance movement, writer, and clubwoman. She was a deep thinker on the most advanced social and religious topics of her day, and occasionally published her views on woman in her political and civil relations. She was the first Kentucky woman who wrote and advocated the equal rights of woman before the law, and who argued for the higher education of woman. She served as president of the Woman's Christian Temperance Union (WCTU) of Kentucky, and as the National WCTU's Superintendent of police matrons.