Thun, born in 1952 in Bolzano, Italy, is an architect and designer.
Thun studied at the Salzburg Academy under the supervision of Oskar Kokoschka. He then obtained a degree in architecture in Florence, Italy, in 1975. In 1978 he moved to Milan, starting to work with Ettore Sottsass.
In 1981, he was one of the co-founders of the Memphis Group, a design movement that helped shape form and style throughout the 1980s. The following year, he was appointed the chair in product design and ceramics by the University of Applied Arts Vienna.
In 1984, he founded his Studio, in Milan, Italy. Between 1990 and 1993, he worked as the Creative Director at Swatch.