Mehdi Beyhaghi (pronounced Meh-dee Bay-ha-qi) is a Principal Economist at the Board of Governors of the Federal Reserve System, the central bank of the United States, where his work focuses on banking regulation, financial stability, and applied economic research.

His policy work centers on the evaluation and design of major banking regulations, including the Basel III Endgame, enhanced liquidity requirements, long-term debt mandates, and capital buffer frameworks. He contributes to macroprudential and cost–benefit analyses that inform supervisory policy and promote the resilience of the U.S. financial system, working closely with multidisciplinary teams across economics, supervision, and legal functions.

Previously, he served as a Senior Economist at the Federal Reserve Bank of Richmond, where he supported capital policy and stress testing for the largest U.S. banking organizations as part of the Large Institution Supervision Coordinating Committee (LISCC). His background also includes academic research and teaching in financial economics.

His research examines financial intermediation, monetary policy transmission, and the real effects of regulation, with publications in leading journals such as the Journal of Finance, Review of Financial Studies, and Management Science. His work has been recognized by awards including the Financial Management Association’s Best Paper in Risk Management and the Society for Financial Studies’ Rising Scholar Award.