Leonid Denisovich Kizim (5 August 1941 – 14 June 2010) was a Soviet cosmonaut. In 1986 he was the commander of the only space mission to visit two space stations on one flight. These were the new Mir station and the old Salyut 7 station. At the end of the flight he became the first person to have spent a whole year in space. All together he spent 374 days 17 hours 56 minutes in space.