Oleg Georgievich Gazenko (Russian: Олег Георгиевич Газенко; 12 December 1918 – 17 November 2007) was a Russian scientist, general officer in the Soviet Air Force and the former director of the Institute of Biomedical Problems in Moscow. One of the leading scientists behind the Soviet animals in space programmes, he selected and trained Laika, the dog who flew on the Sputnik 2 mission.