The Arctic Institute – Center for Circumpolar Security Studies, often referred to as The Arctic Institute or TAI, is an international think tank founded in 2011 and headquartered in Washington, D.C. The Institute's mission is to inform Arctic policy through interdisciplinary, inclusive research that addresses the most critical issues in the circumpolar Arctic. TAI is composed of researchers from around the world. The University of Pennsylvania's Global Go To Think Tank Index has consistently ranked The Arctic Institute among the top one hundred best think tanks in the United States since 2016. Lillian Hussong has served as the interim managing director since August 2021.