Edith Mansell-Moullin was an English suffragist of Welsh heritage and social activist. Proud of her Welsh roots, she founded the Cymric Suffrage Union, which was dedicated to gaining women's suffrage for Welsh women. She was the co-organizer of the Welsh contingent of the 1911 procession of the Women’s Suffrage Union’s "Great Demonstration" held in 1911 in London. Part of the more militant British suffrage contingent, she was imprisoned for dissidence and refused to stop government agitation during World War I.