Xavier Musca (born 23 February 1960 in Bastia, Corsica) is a French economist, writer, and public administrator. As of February 27, 2011, he is the Secretary-General of the French President Nicolas Sarkozy's Office. The two years before he was the deputy.
- 1988 - 1989 Adviser to the head of the Inspection Générale des Finances
- 1989 - 1990 Special adviser, Bureau for Energy, Transportation and Mines, charged with the FDES (economic and social development fund) secretariat at the Treasury Directorate
- 1990 - 1993 Head of the European Affairs Bureau at the Treasury Directorate
- 1993 - 1995 Technical adviser for Financial Affairs and International Economic Issues in the Private Office of Prime Minister Edouard Balladur.
- 1995 - 1996 Head of the Financial Market Bureau at the Treasury Directorate
- 1996 - 2000 Deputy Director for Europe and Monetary and International Affairs at the European and International Affairs Division of the Treasury Directorate
- 2000 Chargé de la sous-Direction du financement de l'économie et Head of the Division for the Financing of the Economy and Business Competitiveness, and subsequently Deputy Director
- Member of the plenary group of the Euro Taskforce
- 2001 - May 2002 Head of the Department for the Financing of the State and the Economy at the Treasury Directorate
- May 2002 - June 2004 Principal Private Secretary to the Minister of the Economy, Finance and Industry
- June 2004-November 2004 Director of the Treasury
- November 2004 - February 2009 Director General of the Treasury and Economic Policy and as such President of the Paris Club, a group of finance officials from 19 of the world's richest countries.
- Code monétaire et financier, Alice Pezard and Xavier Musca ; Ed. Litec (2005) ; ISBN 2-7110-0592-5
- Rapport Moral sur l'Argent dans le Monde, Hubert Martini, Dominica Deprée, Joanne Klein-Cornede, and Xavier Musca; Association d'Economie Financière (2006) ; ISBN 2-911144-92-9