Peter Brabeck-Letmathe (born 13 November 1944) is an Austrian businessman serving since 2025 as chairman ad interim of the World Economic Forum. He is the chairman emeritus, former chairman and CEO (1997–2008) of the Nestlé Group, and former chairman of the Formula One Group.

Brabeck-Letmathe was born in Villach, German-occupied Austria, to a Catholic family with its origins in Iserlohn-Letmathe in north-western Germany. He studied economics at the University of World Trade (today Vienna University of Economics and Business).