| Acronym | Definition |
|---|
| SNA | Systems Network Architecture (IBM) |
| SNA | School Nutrition Association |
| SNA | Social Network Analysis |
| SNA | Special Needs Assistant (various organizations; Ireland) |
| SNA | System of National Accounts (UN) |
| SNA | Serial Number Arithmetic |
| SNA | Sociedad Nacional de Agricultura (Chilean Agricultural Society) |
| SNA | Société Nationale de l'Acadie |
| SNA | Skynet Asia Airways (Japan) |
| SNA | Sous-marin Nucléaire d'Attaque (French Navy) |
| SNA | Surface Navy Association |
| SNA | Student Nursing Association |
| SNA | Scientific and Natural Area |
| SNA | Syndicat National des Antiquaires (French: National Union of Antiques Dealers) |
| SNA | Scalar Network Analyzer |
| SNA | Stichting voor de Nederlandse Archeologie (Dutch Archaeology Body) |
| SNA | Student Naval Aviator |
| SNA | Service National de l'Adresse (French: National Address Management Service) |
| SNA | System of National Accounting |
| SNA | Syndicat National d'Apiculture (French: National Apiculture Union) |
| SNA | Santa Ana, CA, USA - John Wayne Airport (Airport Code) |
| SNA | Survivable Network Analysis |
| SNA | Sierra Nevada Alliance (South Lake Tahoe, CA) |
| SNA | Southern Nursery Association, Inc. |
| SNA | Soviet Naval Aviation |
| SNA | Social Network Mining and Analysis |
| SNA | Synchronous Network Architecture |
| SNA | Single and Available |
| SNA | Shared-Nothing Architecture (distributed computing architecture) |
| SNA | Shared Network Architecture |
| SNA | Service National Adapté (France) |
| SNA | Strategic Needs Assessment |
| SNA | Signal National d'Alerte (French: National Warning Signal) |
| SNA | Syndicat National des Éditeurs d'Annuaires (French: National Association of Directory Publishers) |
| SNA | Société Nouvelle Areacem (French: Areacem Company News) |
| SNA | Service National Actif (French: Active Military Duty) |
| SNA | Société Nautique d'Avignon (French: Avignon Boating Society; France) |
| SNA | Statement of Nonavailability |
| SNA | Software Network Architecture |
| SNA | Société Nouvelle d'Asphaltes (French: New Asphalt Company) |
| SNA | Société Neuchâteloise d'Astronomie (French: Neuchatel Astronomical Society; Switzerland; est. 1979) |
| SNA | Shared Network Arrangement |
| SNA | Simple Network Automated Provisioning (Cisco) |
| SNA | Société Niçoise d'Assainissement (French: Niçoise Sanitation Company; France) |
| SNA | Sella-Nasion Subspinale (Cephalometrics, aka point A) |
| SNA | Steerable Null Antenna |
| SNA | Système National d'Appui À l'Enseignement Agricole (French: National System of Support to Agricultural Education) |
| SNA | Subordination, Nondisturbance, and Attornment (lease agreement) |
| SNA | Simple Network Administration |
| SNA | Switch Network Address |
| SNA | Subsurface, Nuclear-Powered Attack (Submarine) |
| SNA | Star Neighborhood Approach |
| SNA | Switchmen's Union of North America |
| SNA | Strategic National Account |
| SNA | Anaheim, CA, USA - John Wayne International - Orange County (Airport Code) |
| SNA | Sanyo North America (San Diego, CA) |
| SNA | Séisme Normal Admissible (French: Normal Admissible Earthquake) |
| SNA | Sofia News Agency (Bulgaria) |
| SNA | Scalable Network Accelerator (computing) |
| SNA | Secure Network Access (Nortel) |
| SNA | Seven Nation Army (gaming) |