SNS, sns, or SNs may refer to:
Science and technology Biology and medicine Somatic nervous system or voluntary nervous system Supplemental nursing system, a system designed to supplement breastfeeding Sympathetic nervous system, a part of the autonomic nervous system
Computing Social network, a social structure made up of a set of social actors Social networking service, an online platform used to build relations Amazon Simple Notification Service, a cloud-based service Synthetic nervous system, a computational neuroscience model
Other uses in science and technology Spallation Neutron Source, Oak Ridge, Tennessee, United States U.S. Strategic National Stockpile of medical supplies Tin(II) sulfide, SnS
Organizations Businesses SNS Bank, Netherlands Street News Service, for street newspapers
Political parties Serbian Progressive Party () Serb People's Party (Montenegro) () Slovak National Party () (1990–present) Slovak National Party (historical) () (1871–1938) Slovenian National Party ()
Other organizations Scuola Normale Superiore, an Italian higher education institution Serviço Nacional de Saúde, the Portuguese national health service Sistema Nacional de Salud, the national health system of Spain Société de natation de Strasbourg, a French water polo team Special Night Squads, a former Jewish-British military unit Stoke Newington School, London, United Kingdom Finland–Soviet Union Peace and Friendship Society (), a Finnish anti-war propaganda organization
Transport Salinas Municipal Airport, Monterey County, California, United States (IATA code) Staines railway station, Surrey, England (National Rail station code)
Other uses SNS, the product code used by Nintendo for Super NES hardware (e.g. SNS-001) Salomon Nordic System, a binding standard for cross country skis Saturday Night Special (disambiguation) Nahavaq language, an ISO 639-3 code