NID

The abbreviation NID stands for:

Namibian Institute for Democracy
Non smoking initiative Germany, an umbrella organization
Low-level information service Bavaria by the Bavarian State Office for the Environment
British Naval Intelligence Department, British intelligence
Nieuwe Intercity Dubbeldekker, a Dutch electric multiple
Nitrate Information Service (Baden- Württemberg)
Nitrate Information Service (Lower Austria )
Neighbourhood Improvement District
Nimzo - Indian Defence, English for Nimzowitsch - Indian Defence, an opening system in chess
A fictional secret organization from the science fiction television series Stargate - SG -1 command with no known descripion