Ülo Ilmar Sooster (October 17, 1924 in Ühtri, Käina Parish – October 25, 1970 in Moscow) was an Estonian nonconformist painter. Ülo Sooster was born the village of Ühtri on the Estonian island of Hiiumaa. He was the son of Johannes Sooster and Veera Sooster (née Tatter) and had a sister, Meedi, two years younger. His father was later remarried to Linda Vahtras. He was educated at Tartu Art College where he studied surrealism during the years 1945–1949. In 1949, his studies were cut short when he was arrested and, like hundreds of thousands of other Estonians, Latvians and Lithuanians, he was arrested and deported by the Soviet authorities to Gulag. Sooster was sentenced to ten years of hard labour in a Karaganda camp. In 1956, during the Khrushchev Thaw, he was released and 'rehabilitated'