Stephen Samuel Roach (born September 16, 1945) is an American economist.

Roach was a research fellow at the Brookings Institution in Washington, D.C. From 1972 until 1979, Roach served as staff economist of the Federal Reserve Board in Washington, D.C.[1] supervising the preparation of the official Federal Reserve projections of the U.S. economy.

He was the investment bank's chief economist[1] since 1982, serving as head of the firm's global team of economists in New York, London, Tokyo, Hong Kong, Singapore, and Paris.

[3] In 2009, Dirk Bezemer, a Professor of Economics at the University of Groningen in the Netherlands, noted that Roach was one of the earliest to have predicted the 2007–2008 financial crisis.

[7] Roach writes monthly columns for the international media organization Project Syndicate.