Christine Le Bihan-Graf graduated from ENA (Valmy class) and was Maître des requêtes at the Conseil d'Etat (1998-2003). She has held a number of senior administrative positions, including Director. Deputy Director General of the Civil Service and State Reform for the Prime Minister (2003-2006), Secretary General of the Ministry of Culture and Communication (2006-2008), Director General of the Energy Regulation Commission (2008-2011). She joined De Pardieu Brocas Maffei as a partner in April 2012, where she set up a department dedicated to Industrial Regulation and Public Economic Law.

On 1 April 2024, Christine Le Bihan-Graf joined Hogan Lovells (Paris) LLP to set up a department dedicated to energy transition. 

Christine Le Bihan-Graf is a Knight of the Legion of Honour and a Knight of the National Order of Merit.

She is co-author of the "Code de l'Energie" published by Editions Lexis Nexis (January 2021) and contributed to the Institut Montaigne report "Transition énergétique: faisons jouer nos réseaux" as Chair of the working group (December 2019).