| NAS | Narcissistic Abuse Syndrome 
| Others |
| NAS | Narcotics Assistance Section
| Others |
| NAS | Narvik Automobilselskap
| Others |
| NAS | Nasa Advanced Supercomputing
| Others |
| NAS | Nassau, Bahamas
| Others |
| NAS | National Academies of Sciences
| Others |
| NAS | National Academy of Sciences
| Others |
| NAS | National Academy of Sciences, Republic of Korea
| Others |
| NAS | National Acceptor Survey
| Others |
| NAS | National Accessible Scheme
| Others |
| NAS | National Account Statistics
| Others |
| NAS | National Advanced Systems
| Others |
| NAS | National Aerospace Standard
| Others |
| NAS | National Aerospace Standards
| Others |
| NAS | National Air Services
| Others |
| NAS | National Aircraft Standard
| Others |
| NAS | National Airspace System
| Others |
| NAS | National Association of Scholars
| Others |
| NAS | National Association of Seadogs
| Others |
| NAS | National Asthma Survey
| Others |
| NAS | National Audubon Society
| Others |
| NAS | National Autistic Society
| Others |
| NAS | National Automobile Show
| Others |
| NAS | Native American Studies
| Others |
| NAS | NAV Application Server
| Others |
| NAS | Naval Air Squadron
| Others |
| NAS | Naval Air Station
| Others |
| NAS | Naza Auto Solutions
| Others |
| NAS | Nbma Arp Server
| Others |
| NAS | Nebraska Academy of Sciences
| Others |
| NAS | Needle Arts Studio
| Others |
| NAS | Neonatal abstinence syndrome
| Others |
| NAS | Net Analyte Signal
| Others |
| NAS | Netnews Administration System
| Others |
| NAS | Netscape Application Server
| Others |
| NAS | Network Access Server
| Others |
| NAS | Network Access Services
| Others |
| NAS | Network Addressable Storage
| Others |
| NAS | Network Administrator Specialist
| Others |
| NAS | Network Appliance Servers
| Others |
| NAS | Network Application Server
| Others |
| NAS | Network Application Support
| Others |
| NAS | Network Area Storage
| Others |
| NAS | Network Attached Storage
| Others |
| NAS | Network Audio Server
| Others |
| NAS | Network Audio System
| Others |
| NAS | Network Authentication Service
| Others |
| NAS | Network-Attached Storage
| Others |
| NAS | Never Again Sorry
| Others |
| NAS | Never Any Service
| Others |
| NAS | New Acronym Search
| Others |
| NAS | New Active Substance
| Others |
| NAS | New Allied Sith
| Others |
| NAS | New American Standard
| Others |
| NAS | Newly Associated States
| Others |
| NAS | Next Accreditation System
| Others |
| NAS | Nice And Slow
| Others |
| NAS | Nigerian Academy of Science
| Others |
| NAS | Nikon Advanced Systems
| Others |
| NAS | No Abnormality Seen
| Others |
| NAS | No Active Support
| Others |
| NAS | No Added Sugar
| Others |
| NAS | No Age Statement
| Others |
| NAS | Non Action System
| Others |
| NAS | Non Ansi Standard
| Others |
| NAS | Non-Access Stratum
| Others |
| NAS | Non-Audit Services
| Others |
| NAS | Non-indigenous Aquatic Species
| Others |
| NAS | Normative Aging Study
| Others |
| NAS | Norsk Astronomisk Selskap
| Others |
| NAS | North American Series
| Others |
| NAS | North American Specification
| Others |
| NAS | North American Specifications
| Others |
| NAS | North American Standard
| Others |
| NAS | Northern Asia
| Others |
| NAS | Northern Associated Schools
| Others |
| NAS | Northern Automotive Systems
| Others |
| NAS | Norwegian Astronomical Society
| Others |
| NAS | Not A Scratch
| Others |
| NAS | Not A Slapper
| Others |
| NAS | Not A Stock
| Others |
| NAS | Not Absolutely Sure
| Others |
| NAS | Not Another School
| Others |
| NAS | NTFS (New Technology File System) Analog System
| Others |
| NAS | Nucleus Accumbens Septum
| Others |
| NAS | Numerical Aerodynamic Simulation
| Others |
| NAS | Numerical Aerodynamic Simulator
| Others |
| NAS | Numerical Aerospace Simulation
| Others |