Frank Pabian is a senior open-source nonproliferation analyst at Los Alamos National Laboratory and the European Commission's Joint Research Centre. He is a leading expert in open-source intelligence (OSINT) analysis for nuclear nonproliferation, renowned for his use of commercial satellite imagery to monitor and assess covert nuclear activities. His detailed reports have focused on key sites including North Korea's Yongbyon Nuclear Scientific Research Center, where he has tracked developments such as uranium enrichment facilities and reactor operations, as well as Iran's Fordow Fuel Enrichment Plant and Syria's Al Kibar reactor site destroyed in 2007. Pabian's analyses, often published on platforms like 38 North (a Stimson Center project), have informed U.S. government assessments, UN reports, and international policymakers, contributing to global nonproliferation efforts since at least the early 2000s. Throughout his career, Pabian has presented at conferences and collaborated with nonproliferation specialists, emphasizing the value of accessible satellite data over classified intelligence. His methodologies have advanced the field of geospatial analysis for arms control verification, earning recognition in academic and policy circles. While primarily based in the U.S., his role at the European Commission's Joint Research Centre reflects transatlantic cooperation in counterproliferation. No public records indicate legal issues, controversies, or personal details such as family or health.