SN

SN, Sn, sn, .sn, or s.n. may refer to:

Businesses and organizations

• Brussels Airlines (IATA code SN)
  • Sabena (IATA airline code SN)
  • SN Brussels Airlines (IATA code SN)
• Standards Norway, the main standards organization of Norway
• Stronnictwo Narodowe (National Party), a Polish political party

Places

• SN postcode area, the UK postcode district containing Swindon and much of North Wiltshire
• Senegal (ISO country code SN)

Religion

• Samyutta Nikaya or SN, a Buddhist scripture
• Sutta Nipata or Sn, a Buddhist scripture

Science, technology, and mathematics

Computing

• .sn, the country-code top level domain of Senegal
• sn, the surname attribute of the Lightweight Directory Access Protocol

Mathematics

• Symmetric group or S_n
• n-sphere or Sⁿ
• sn, one of Jacobi's elliptic functions

Meteorology

• SN, METAR code for snow
• Spotter Network, a system for reporting location and severe weather observations of storm spotters and chasers

Other uses in science and technology

• Savin–Norov machine gun
• Space Network, a NASA relay satellite system
• Sthene, an obsolete unit of force or thrust in the metre-tonne-second system of units
• Substantia nigra, a brain structure
• Supernova, a stellar explosion, in astronomy and cosmology
• Tin, a metallic element with chemical symbol Sn

Other uses

• Seaman, abbreviation for the United States Navy rank
• Serial number, in component tracking
• Shona language (ISO 639 alpha-2 code "sn")
• Sine nomine or s.n., a Latin term for "without a name"

See also

• S/n (disambiguation)
• ΣΝ or Sigma Nu, a fraternity