Peter Löscher (born 17 September 1957 in Villach, Austria) is an Austrian manager and former president, Global Human Health at global pharmaceutical company Merck & Co.
He was appointed chief executive officer (CEO) of Siemens on 20 May 2007 as the successor of Klaus Kleinfeld, and was selected to take on the new position on 1 July 2007.
As of 2017, Löscher remains as the only CEO to be hired from outside the conglomerate in the 170-year history of Siemens.