The ASEAN Agreement on Transboundary Haze Pollution is a legally binding environmental agreement signed in 2002 by the member states of the Association of Southeast Asian Nations to reduce haze pollution in Southeast Asia. The Agreement recognises that transboundary haze pollution which results from land and/or forest fires should be mitigated through concerted national efforts and international co-operation.

The Association of Southeast Asian Nations, commonly as ASEAN, is a political and economic union of 10 states in Southeast Asia. Together, its member states represent a population of over 600 million over a land area of 4.5 million km2 (1.7 million sq mi). The bloc generated a purchasing power parity (PPP) gross domestic product (GDP) of around US$10.2 trillion in 2022, constituting approximately 6.5% of global GDP (PPP). ASEAN member states include some of the fastest growing economies in the world.