Sixten Ivar Alexander Ringbom (July 27, 1935 â August 18, 1992) was a Finnish art historian.
Sixten Ringbom was the son of , a professor of art history at ÃÂ bo Akademi University. He studied at the Swedish classical lyceum () in Turku, then at the ÃÂ bo Akademi University among students of his father. In 1965, Sixten received his PhD. A supervisor his doctoral thesis was art historian Ernst Gombrich. In 1970, Ringbom succeeded his father as professor of art history at ÃÂ bo Akademi University.
Ringbom became the first scientist who has supposed an existence of a connection between early abstract art and occultism. He published his conjectures in an article "Art in 'The Epoch of the Great Spiritual': Occult Elements in the Early Theory of Abstract Painting" (1966) and in a book The Sounding Cosmos: A Study in the Spiritualism of Kandinsky and the Genesis of Abstract Painting (1970). According to WorldCat, he had written 93 works. From 1969 to 1973, he was the chief editor of Finsk Tidskrift, he was also the editor of a book Konsten i Finland [Art in Finland].