SNA, Sna, or sna may refer to:
In economics:
- System of National Accounts, a conceptual framework that sets the international statistical standard for the measurement of the market economy
- United Nations System of National Accounts
In media:
- Novinite.com (Sofia News Agency), Bulgaria's largest English language news provider
- Sky News Australia, Australian 24 hour news channel
In science and technology:
- Avaya Secure Network Access, was Nortel Secure Network Access, Nortel-SNA, or NSNA, a NAC product of Nortel
- .sna, snapshot file used in ZX Spectrum emulation
- Social Network Aggregator
- Social network analysis
- Sous-marin nucléaire d'attaque, the French term for tactical nuclear submarines
- IBM Systems Network Architecture, an IBM computer networking protocol
- SNA, for the lectin of Elderberry (Sambucus nigra)
- Spherical Nucleic Acids
In transport:
- John Wayne Airport, IATA airport code SNA
- Santa Ana (Amtrak station), Amtrak station code SNA
- Skynet Asia, a Japanese airline
- Student Naval Aviator
Other uses:
- Sanandaj, a city in Kurdistan, Iran
- Somali National Army, from 1960 to 1991
- Somali National Alliance, a faction in the Somali Civil War from 1992
- Special needs assistant, a person working with people with special needs