Wolfgang Sachs (German: [zaks]; born 25 November 1946) is a researcher, writer and university teacher in the field of environment, development, and globalization.

1987–1990 he was visiting professor at Pennsylvania State University and 1990–1993 fellow at the Institute for Advanced Study in the Humanities in Essen.

On behalf of the Heinrich Böll Foundation, he chaired two international civil society expert panels, one to draft a memorandum for the World Summit on Sustainable Development in Johannesburg in 2002 (The Jo'burg Memo) and the other (also on behalf of Misereor) to carry out a Dialogue / Report on multilateral trade rules for sustainable markets in agriculture (Slow Trade – Sound Farming, 2007).

Sachs is a member of the Scientific Advisory Board of Association for the Taxation of Financial Transactions and for Citizens' Action.

Sachs is also a member of the Club of Rome, a lecturer at Schumacher College and an honorary professor at the University of Kassel, Germany.