Guillaume Dedet is a physician and health economist. He works as a senior analyst for the Health Division of the Organisation for Economic Co-operation and Development (OECD), where he leads the organisation's work on comparative analysis of the performance of health systems in OECD countries. He previously worked at the Ministry of Health in Paris and at the WHO Regional Office in Copenhagen. Guillaume Dedet is a former Harkness Fellow and visiting professor at Stanford University. He also teaches at the School of International Affairs at Sciences Po Paris.