Woo Yong-gak (29 November 1929 – 7 December 2012) was a North Korean commando who was released from incarceration in South Korea on 25 February 1999. He served 40 years, 7 months and 13 days in prison as one of South Korea's unconverted long-term prisoners. It has also been said that he "spent 41 years in solitary confinement". He returned to North Korea in September 2000.