| Acronym | Definition |
|---|
| NAG | Linux Network Administrators Guide (Hackish) |
| NAG | N-Acetylglucosamine (glucose derivative) |
| NAG | National Art Gallery |
| NAG | National Australia Group (financial services) |
| NAG | Novell Access Gateway |
| NAG | Network Administrator Guide |
| NAG | Numerical Algorithms Group |
| NAG | National Association of Goldsmiths (est. 1894; UK and Ireland) |
| NAG | Northfield Arts Guild (Minnesota) |
| NAG | Numerical Algorithms Group Ltd. |
| NAG | Narrow Angle Glaucoma |
| NAG | Neighbors Allied for Good Growth (formerly Neighbors Against Garbage) |
| NAG | Network Auralization for Gnutella (open software) |
| NAG | National Administration Guidelines |
| NAG | National Accountability Group (Sierra Leone) |
| NAG | Northern Arabian Gulf |
| NAG | N-Acetyl Beta-Glucosaminidase (also seen as NABG) |
| NAG | Neighbors Against Garbage (Brooklyn, New York) |
| NAG | Network Architecture Group |
| NAG | Non-Acid Generating (mineralogy) |
| NAG | National Association of Gals (Rush Limbaugh name for NOW) |
| NAG | National Algorithms Group |
| NAG | New Age Gaming (gaming magazine in South Africa) |
| NAG | Neighborhood Action Group |
| NAG | Naval Automation Group (est. 1999) |
| NAG | Naval Air Group |
| NAG | Nagpur, India - Sonegaon (Airport Code) |
| NAG | Nagoya Adachi Gakuen (Nagoya, Japan) |
| NAG | Needed Acoustic Gain (sound-reinforcement systems) |
| NAG | Nihilist Assault Group (Norway) |
| NAG | National Air-Racing Group |
| NAG | Naval Astronautics Group |
| NAG | Netherlands Antilles Guilder (national currency) |
| NAG | Navy Advisory Group |
| NAG | Network Access Gateway |
| NAG | Nitric Acid Grade |
| NAG | Numbering Advisory Group |
| NAG | Non-Anion Gap |
| NAG | National Auction Group, Inc |
| NAG | N-acetyl-beta-D-glucoaminidase |
| NAG | National Armament Goals |
| NAG | Naval Air Gunner |
| NAG | National Activists Group (UK) |