Ellen Helga Louise Hagen (née Wadström; 1873–1967) was a Swedish suffragette, women's rights activist and politician. She was a member of the National Association for Women's Suffrage, the chairperson of Liberala kvinnor (Liberal Women) in 1938–1946 and Svenska Kvinnors Medborgarförbund (Swedish Women's Citizen Society) in 1936–1963. During the 1920s and 1930s, she was internationally active within peace work and the Swedish delegate in the international peace conference in Paris in 1931.