Bertha Mason (1855–1939) was an English suffragist and temperance campaigner born in Ashton-under-Lyne. Influenced by her father Hugh Mason, a Member of Parliament for the Liberal Party, she became a dedicated activist, serving as a committee member in many groups including the National Union of Women's Suffrage Societies and National Council of Women of Great Britain. Her book The Story of the Women Suffrage Movement was published in 1912. After serving in the British Committee of the French Red Cross in the First World War, she resumed her activism with the Women's Local Government Society and joined the National Council of Women of Great Britain. She died in London.