The Puey Ungphakorn Institute for Economic Research (PIER) is an economics research institute based in Bangkok, Thailand. It shares research and analysis intended to inform understanding of economic issues and support policy discussion. Its publications include research discussion papers, PIERspectives, aBRIDGEd summaries, and blog articles. Topics featured on its site include inflation expectations, energy-price shocks, household debt, small and medium-sized businesses, agricultural reform, and financial markets.

PIER also convenes conferences, research workshops, policy forums, seminars, and exchanges, and publishes research briefs. Its community initiatives include the PIER Research Network, visiting fellowships, and funding and grants. The institute introduces its researchers and their work, shares announcements, and provides information about its organization, board, staff, and career opportunities. Through its publications and events, PIER connects economic research with public and policy conversations in Thailand. Its website offers access to its latest papers, articles, event information, and a newsletter subscription. The institute is located on Samsen Road in Bangkok and is associated with the Bank of Thailand.