Seonghan of Silla (Hangul: 성한; hanja: 星漢), also called Sehan of Silla (Hangul: 세한; hanja: 勢漢), was a Korean Silla Dynasty politician. He was one of the founders of Gyeongju Kim clan. According to some theories, he was a son of Kim Alji, or a seventh-generation descendant of Xiongnu through the Han Dynasty general Jin Midi. He was also known as King Taejo Seonghan (Hangul: 태조성한왕; hanja: 太祖星漢王).