Thierry Breton is a French business executive, politician, writer and the current Commissioner for Internal Market of the European Union. Breton was vice-chairman and CEO of Groupe Bull (1996–1997), chairman and CEO of Thomson-RCA (1997–2002) and chairman and CEO of France Télécom (2002–2005). In 2005 he entered politics serving as Minister of Economy, Finance and Industry (2005–2007) in the governments of Prime Ministers Jean-Pierre Raffarin and Dominique de Villepin, during the presidency of Jacques Chirac. From 2007 to 2008 he was a professor at Harvard Business School before joining group Atos from 2009 to 2019 as its CEO.

The Commissioner for Internal Market is a member of the European Commission. The post is currently held by Commissioner Thierry Breton.