Claesson Koivisto Rune is a Swedish multidisciplinary design/architecture office based in Stockholm, Sweden. It was founded in 1995 by former University College of Arts classmates Mårten Claesson, Eero Koivisto and Ola Rune. The office's design work spans from jewellery to toothbrushes to large buildings. Their furniture and product designs have been produced in Sweden, Finland, Denmark, Belgium, Germany, England, Italy, USA and Japan. Claesson Koivisto Rune are the subject of five biographical publications, and their works appear in some 130 design/architecture books. They were the first Swedish architectural office to be invited to exhibit at the international section of the Venice Biennale of architecture in 2004.