Mabel Henrietta Capper (23 June 1888 – 1 September 1966) was a British suffragette. She gave all her time between 1907 and 1913 to the Women's Social and Political Union (WSPU) as a 'soldier' in the struggle for women's suffrage. She was imprisoned six times, went on hunger strike and was one of the first suffragettes to be force-fed.