Jeanne Alida "Jan" Ruff-O'Herne AO (18 January 1923 – 19 August 2019) was a Dutch Australian human rights activist known for campaigning internationally against war rape. During World War II, Ruff-O'Herne was forced into sexual slavery by the Imperial Japanese Army. After remaining silent for fifty years, from the 1990s until her death, Ruff-O'Herne spoke out publicly to demand a formal apology from the Japanese government and to highlight the plight of other "comfort women". On her death, the South Australian Attorney-General noted: "her story of survival is a tribute to her strength and courage, and she will be sorely missed not only here in South Australia, but around the world."