Helena Maria Lucy Swanwick (1864–1939) was a German-born British writer, editor, and journalist. She spent much of her career arguing for women’s rights, but because of her fervent pacifist beliefs she was also occasionally critical of violence in the suffragist movement of the early twentieth century. She was a forthright opponent of World War I, calling throughout the war for both sides to negotiate a peace. In the 1920s she served as an alternative delegate to the League of Nations. In 1939, however, deeply depressed by the increasing tensions in Europe, including the rise of Nazism and the outbreak of World War II, Swanwick committed suicide at her home in Berkshire.