The initials ISN can stand for: Bureau of International Security and Nonproliferation, in the U.S. Department of State Intel Software Network International Relations and Security Network International Socialist Network International Society for Neurochemistry International Society of Nephrology Irish Socialist Network Israel Start-Up Nation ITAD Subscriber Numbers for VoIP PBX Nicaraguan Sign Language () Sloulin Field International Airport, a defunct airport in North Dakota with the IATA code "ISN"
==See also== International Standard Number (disambiguation)
Discovered by embedding cosine similarity (sentence-transformers MiniLM, 384-dim).