SSN

SSN may refer to:

Arts and entertainment

Tom Clancy's SSN, a 1996 game by Clancy Interactive Entertainment describing the operations of a U.S. Navy attack submarine
SSN (novel), a 1996 novel by Tom Clancy as a tie-in to the game
SSN: Modern Tactical Submarine Warfare, a 1975 board wargame

Scholars Strategy Network, an association of academics and researchers
Scoil an Spioraid Naoimh, a primary school in Cork City Ireland
SSN College of Engineering, an engineering institution located in the suburbs of Chennai, Tamil Nadu, India

Servicio Sismológico Nacional, the Mexican National Seismological Service, UNAM, Mexico
Servizio Sanitario Nazionale, Italy's national health service
Social Security number, an identification number used by the U.S. Social Security Administration
Superintendency of Insurance (Argentina) (Superintendencia de Seguros de la Nación), of Argentina overseeing insurance companies

The Seed Savers' Network, an international not-for-profit seed-saving organisation founded in Australia
Socialist Solidarity Network, a Trotskyist group in the UK
Società Storica Novarese (Novara Historical Society), an association for historical studies founded in Novara, Italy
Société suisse de numismatique, a Swiss numismatic organization
Space Surveillance Network, a US program to monitor space activity
Species Survival Network, a coalition of conservation organizations
Suncorp Super Netball, the sponsored name of the Australian Super Netball professional league

Secure Service Network, a type of network behind a firewall or IPS
Semantic Sensor Network, an ontology in the Semantic Sensor Web
SIM Serial Number, used to identify a mobile phone's SIM card
Subsystem number, used in the Signaling Connection and Control Part of Signaling System #7 routing
Surgical segment navigator, a system for computer-assisted surgery
Superior salivatory nucleus, a cranial nerve nucleus

South Sudan, a country
Seoul Air Base (IATA code: SSN), South Korea
SSN (hull classification symbol), the US Navy's symbol for a nuclear powered fast attack submarine
Stoom Stichting Nederland, a Dutch Railway Museum