Sumiyarsi Siwirini (20 November 1925 – 17 July 2003), whose name was sometimes spelled Sumiarsih, was an Indonesian doctor, writer, activist, and political prisoner.[1][2] She was imprisoned in the Plantungan concentration camp by the Indonesian government during the 1970s, where she became well-known for running a medical clinic staffed by fellow prisoners; in the anticommunist propaganda of the Indonesian military she was portrayed as the "doctor of Lubang Buaya."[1][3][4]