Walter Bruno Kielholz (born 25 February 1951 in Zurich) was chairman of the Board of Directors and former CEO of Swiss Re. Kielholz completed a degree in business administration at the University of St. Gallen, Switzerland, in 1976. From 1997 to 2002 he was CEO of Swiss Re. He was Swiss Re's Chairman from 2009 to 2021. He has been Honorary Chairman of Swiss Re since April 2021.