Stephen A. Hammer, PhD
  • Overview
  • Biography
  • Selected publications
  • Recent Speeches, etc.
Stephen Hammer currently serves as an Advisor, focused on International Climate Policy and Strategy, with the World Bank's Climate Change Group in Washington DC.  In this role he serves as a key policy advisor to WBG senior management and leads the Bank's climate finance-related engagement with the G7, G20, and UNFCCC.  He represents the World Bank on numerous global commissions and working groups focused on climate finance, and was one of the key movers behind the creation of the Coalition of Finance Ministers for Climate Action, a group which he continues to advise on strategic matters.  In 2021 he chaired the global working group focused on the "Paris Alignment" of MDB lending portfolios.

He previously served as Manager of Climate Policy for the World Bank Group, where he led an interdisciplinary team of 60+
 scientists, economists, technical experts, and consultants focused on frontier research on climate change and development topics, the mainstreaming of climate change in World Bank operations, and the provision of climate-related advisory services to clients and Bank teams.  Prior to assuming this role, he was Global Lead shaping the Bank's work on cities and climate change. 

Before joining the World Bank, Dr. Hammer was a professor at MIT's Department of Urban Studies and Planning (DUSP).  He also previously taught at Columbia University's School of International and Public Affairs, the Milano School of Policy, Management and the Environment, and the Pratt Institute. 

​Dr. Hammer can be reached at shammer (at) worldbank.org.