| Abbreviation | Definition |
|---|---|
| NKK | North Korean Kommunists |
| NKN | North Korean Nutcakes |
| NKO | Navy Knowledge On-line |
| NKZ | North Korean Zombies |
| NL | Navy Lighterage |
| NLABS | Natick R and D Laboratories |
| NLABS | Natick Research and Development LABoratories |
| NLAW | Next-generation Light Anti-tank Weapon |
| NLBA | North London Barmy Army |
| NLC | National Logistic Center |
| NLI | Northern Light Infantry |
| NLO | Naval Liaison Officer |
| NLOS | Non Line-Of-Sight |
| NLOS-CA | Non Line Of Sight - Combined Arms |
| NLSP | Network Layer Security Protocol |
| NLT | Not Later Than |
| NLW | Non Lethal Weapons |
| NLW | Nonlethal Weapon |
| NM | Nautical Mile |
| NM | Network Management |