The International Institute for Environment and Development (IIED) is an independent research organisation focused on sustainable development and social justice. Founded in 1971, it has grown into one of the better-known policy research institutes working on the links between environment, poverty and development. IIED’s stated aim is to build a fairer, more sustainable world by using evidence, action and influence in partnership with others.
The institute is based in London, with an additional office in Edinburgh, and works internationally. Its research and policy work spans more than 60 countries, giving it a global reach while keeping a strong emphasis on local and national contexts. IIED’s core areas are natural resources, climate change, human settlements and sustainable markets. Across these fields, it advises policymakers, supports research partners and works with institutions, particularly in the Global South.
A recurring feature of IIED’s work is its focus on practical policy influence rather than academic output alone. It produces research, policy analysis and publications aimed at decision-makers and practitioners. Its work on human settlements and urban development is particularly relevant to cities, while its climate and natural resources programmes address land, biodiversity, adaptation and resilience.
IIED has also played a historical role in shaping the modern sustainable development agenda. Its origins go back to the International Institute for Environmental Affairs, created in New York in 1971 and later moved to London under Barbara Ward, who broadened its remit to include development alongside environmental questions. Today, IIED continues that tradition through research partnerships and policy engagement across the world.