Aaron Y. Zelin is a prominent American political scientist and researcher specializing in jihadist movements, Islamist extremism, and Middle East policy. He serves as a senior fellow at the Washington Institute for Near East Policy (WINEP), a non-partisan think tank in Washington, D.C., focused on U.S. foreign policy in the Near East. Zelin is best known as the founder and former director of Jihadology.net, launched in 2010, which became a critical online resource for archiving and analyzing primary sources of jihadist propaganda, videos, and publications from groups like al-Qaeda, the Islamic State, and their affiliates. His work has provided scholars, journalists, and policymakers with unprecedented access to militant Islamist materials, emphasizing the importance of direct source analysis to understand evolving jihadist ideologies, strategies, and networks. Zelin's expertise has led to frequent citations in major media outlets such as The New York Times, BBC, and Foreign Policy, as well as contributions to academic books and congressional testimonies on counterterrorism. He has collaborated professionally with researchers like Aymenn Jawad Al-Tamimi on projects examining jihadist propaganda and organizational structures. His research often highlights the role of digital media in radicalization and the fragmentation of global jihadist movements. Zelin's approach is data-driven, drawing on multilingual sources to map influence networks within extremist groups. Educated at Brandeis University, Zelin holds degrees in Near Eastern and Judaic Studies, with a focus on Arabic and Islamic texts. He is based in Washington, D.C., where he continues to influence U.S. policy discussions on regional security and counter-extremism efforts.