Arnold Koller (born 29 August 1933) is a Swiss politician and member of the Swiss Federal Council (1986–1999).He was elected to the Federal Council of Switzerland on 10 December 1986 as a member of the Christian Democratic People's Party of Switzerland from the canton of Appenzell Inner Rhodes. He handed over office on 30 April 1999.Arnold Koller was Chairman of the Board of the Forum of Federations from 2006 to 2010.