The Sustainable Development Policy Institute (SDPI) (Urdu: دانش کدہِ برائے وضعِ حکمت عملیِ دائمی ترقی‎) provides the global sustainable development community with representation from Pakistan as well as South Asia as a whole. The Institute's mission is: "To catalyse the transition towards sustainable development, defined as the enhancement of peace, social justice and well-being, within and across generations". The think tank is based in Islamabad, Pakistan. The Lauder Institute of University of Pennsylvania ranks it at number 15 among research institutes in Southeast Asia and the Pacific region.

SDPI was founded in August 1992 on the recommendation of the Pakistan National Conservation Strategy (NCS), also called Pakistan's Agenda 21. The NCS placed Pakistan's socio-economic development within the context of a national environmental plan. This highly acclaimed document, approved by the Federal Cabinet in March 1992, outlined the need for an independent non-profit organization to serve as a source of expertise for policy analysis and development, policy intervention, and policy and program advisory services.SDPI is registered under the Societies Registration Act, XXI of 1860.