Arnold Koller

Arnold Koller
Member of the Swiss Federal Council
In office 1986–1999
Preceded by	Kurt Furgler
Succeeded by	Ruth Metzler
President of Switzerland
In office 1 January 1997 – 31 December 1997
Preceded by	Jean-Pascal Delamuraz
Succeeded by	Flavio Cotti
In office 1 January 1990 – 31 December 1990
Preceded by	Jean-Pascal Delamuraz
Succeeded by	Flavio Cotti
Personal details
Born	Arnold Koller (1933-08-29) 29 August 1933 (age 90) St. Gallen, Switzerland[1]
Political party	Christian Democratic People's Party of Switzerland
Spouse	Erica Brander ​ ​ (m. 1972)​
Children	2
Alma mater	University of St. Gallen (Licentiate) University of Fribourg (Licentiate) University of Fribourg (PhD)

Arnold Koller (/kɒllər/; koll-ər born 29 August 1933) is a Swiss professor and politician. He served as a member of the Federal Council (Switzerland) from 1987 to 1999 for the Christian Democratic People's Party (CVP). Koller previously served as a member of the National Council (Switzerland) from 1971 to 1986.^[2] He did also serve two terms of the as President of the Swiss Confederation in 1990 and 1997.^[3][4][5] He is primarily known for Lex Koller, a Swiss Federal Act on Acquisitions of Real Estate by Persons Abroad, which he initiated.^[6][7]