Operation RYAN (or RYaN, Russian: РЯН, IPA: ) was a Cold War military intelligence program run by the Soviet Union during the early 1980s when they believed the United States was planning for an imminent first strike attack.
Operasi RYAN (atau RYaN) adalah program intelijen militer Perang Dingin yang dioperasikan oleh Uni Soviet pada awal 1980-an ketika mereka masih percaya bahwa Amerika Serikat berencana melancarkan serangan pertama.