| NOS | Fascene Airport 
| Others |
| NOS | Narrow Over the Shoulders
| Others |
| NOS | Nasty Original Stuff
| Others |
| NOS | Nation Of Saints
| Others |
| NOS | National Occupation Standards
| Others |
| NOS | National Occupational Standards
| Others |
| NOS | National Ocean Service
| Others |
| NOS | National Ocean Survey
| Others |
| NOS | National Office Systems
| Others |
| NOS | National Offroad Stadium
| Others |
| NOS | National Open School
| Others |
| NOS | National Open Sportsman Sprint Cars
| Others |
| NOS | National Orange Show
| Others |
| NOS | National Organic Symposium
| Others |
| NOS | National Orthodox School
| Others |
| NOS | National Osteoporosis Society
| Others |
| NOS | NATO Office of Security
| Others |
| NOS | Nature Off Stage
| Others |
| NOS | Nederlandse Omroep
| Others |
| NOS | Nederlandse Omroep Stichting
| Others |
| NOS | Negative Overflow Scrolling
| Others |
| NOS | Neonatal Opium Solution
| Others |
| NOS | Netware Operating System
| Others |
| NOS | Network Object Server
| Others |
| NOS | Network Off Switch
| Others |
| NOS | Network On Standby
| Others |
| NOS | Network Operating System
| Others |
| NOS | Network Operations Service
| Others |
| NOS | Network Optimization Service
| Others |
| NOS | Network Optimization System
| Others |
| NOS | Neurological Overload Set
| Others |
| NOS | Nevada Oncology Society
| Others |
| NOS | Never Offer Service
| Others |
| NOS | Never On Sunday
| Others |
| NOS | Never Otherwise Stated
| Others |
| NOS | New Old Stock
| Others |
| NOS | New Organ Series
| Others |
| NOS | New Original Stock
| Others |
| NOS | Newcastle Ottawa Scale
| Others |
| NOS | Newcastle-Ottawa Scale
| Others |
| NOS | Nine One Six
| Others |
| NOS | Ninjas Optimize Stealth
| Others |
| NOS | Nitric Oxide Synthase
| Others |
| NOS | Nitro Oxide System
| Others |
| NOS | Nitrogen Oxide System
| Others |
| NOS | Nitrous Oxide System
| Others |
| NOS | Nitrous Oxide Systems
| Others |
| NOS | No Obvious Syndrome
| Others |
| NOS | No Organisms Seen
| Others |
| NOS | Node Operating System
| Others |
| NOS | Nomads of Silver
| Others |
| NOS | Non Delay Overclocking System
| Others |
| NOS | Non Operating System
| Others |
| NOS | Non Otherwise Specified
| Others |
| NOS | Non-Organ Specific
| Others |
| NOS | None Otherwise Specified
| Others |
| NOS | Norsk OpsjonsSentral
| Others |
| NOS | Northern Offshore Services
| Others |
| NOS | Nossi- Be, Madagascar
| Others |
| NOS | Not of Specific Origin
| Others |
| NOS | Not Off Set
| Others |
| NOS | Not Often Satisfactory
| Others |
| NOS | Not On Shelf
| Others |
| NOS | Not On Sportbikes
| Others |
| NOS | Not On Staff
| Others |
| NOS | Not Otherwise Specified
| Others |
| NOS | Not Otherwise Specified - other eating disorder, inappropriate diet, binge eating
| Others |
| NOS | Not Otherwise Stated
| Others |
| NOS | Not Otherwised Specified
| Others |
| NOS | Notes Object Services
| Others |
| NOS | Notice Of Sale
| Others |
| NOS | Notice Of Staking
| Others |
| NOS | Novell Operating System
| Others |
| NOS | Novus Ordo Seclorum
| Others |
| NOS | Now On Sale
| Others |
| NOS | Number Of Statements
| Others |
| Nos | Numbers
| Others |