Christian Otto, Wild- and Rhinegrave of Salm-Dhaun (14 April 1680 – 24 April 1748) was Wild- and Rhinegrave of Salm-Dhaun from 1742 until his death. He was the son of John Philip II and his wife Anna Catherine of Nassau-Ottweiler. He was the uncle of his predecessor, John Philip III, who died at age 18. Christian Otto himself also died unmarried and childless. He was succeeded by , the son of his younger brother Walrad. * v * t * e