Yu Jin-san (hangul:유진산, hanja:柳珍山, October 18, 1905 - April 28, 1974) was a controversial South Korean politician, resistance fighter and activist/terrorist. He was born Youngpil(영필 永弼), but as was customary in the period, adopted additional names, using Chinsan (진산 珍山) and Okgye (옥계 玉溪).