Oleg Germanovich Artemyev (Russian: Олег Германович Артемьев) is a Russian Cosmonaut for the Russian Federal Space Agency. He was selected as part of the RKKE-15 Cosmonaut group in 2003. He was a Flight engineer of Expedition 39 and 40 to the International Space Station, and in 2018 he returned to space as the Commander of Soyuz MS-08.