Sixten Ivar Alexander Ringbom (July 27, 1935 – August 18, 1992) was a Finnish art historian.

A supervisor his doctoral thesis was art historian Ernst Gombrich.

In 1970, Ringbom succeeded his father as professor of art history at Åbo Akademi University.

[3][4][5] 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).