Kosmos 356 (Russian: Космос 356 meaning Cosmos 356), also known as DS-U2-MG No.2, was a Soviet satellite which was launched in 1970 as part of the Dnepropetrovsk Sputnik programme. It was a 357-kilogram (787 lb) spacecraft, which was built by the Yuzhnoye Design Bureau, and was used to investigate the magnetic poles of the Earth.