NID

Nid or NID may refer to:

Science

 * Nidogen-1, an extracellular protein
 * Neuronal intestinal dysplasia, a condition involving abnormalities with the nerves supplying the bowel

Telecommunications

 * Namespace Identifier, part of a Uniform Resource Name
 * Network interface device, in telecommunications, providing demarcation between carrier and customer wiring

Organizations

 * Naval Intelligence Department (Royal Navy), the intelligence arm of the British Admiralty from 1887 until 1912
 * National Institute of Cultural Heritage, a Polish governmental institution
 * National Institutes of Design, a group of Indian public design universities
 * National Institute of Design, the primary institute, in Ahmedabad, Gujarat
 * National Institute of Design, Andhra Pradesh, design school in Vijayawada, Andhra Pradesh
 * National Institute of Design, Madhya Pradesh, design school in Bhopal, Madhya Pradesh
 * National Institute of Design, Haryana, design school in Kurukshetra, Haryana
 * National Institute of Design, Assam, design school in Jorhat, Assam
 * Naval Intelligence Division (United Kingdom), of the British Admiralty, prior to 1965
 * Naval Intelligence Division (Israel), a staff unit in the Israeli navy headquarters
 * National Investigation Department of Nepal, an intelligence agency of Nepal
 * NID (Stargate), a fictional secret government organization in the television series Stargate SG-1
 * Nieuport-Delage, an aircraft company from the 1920s and 1930s

Places

 * The Nidelva or Nid River in Trondheim, Norway
 * Nevada Irrigation District, in the Sierra Nevada foothills of California, organized to supply irrigation water

Other

 * National Inventory of Dams, an American database documenting dams in the United States and its territories
 * Nieuwe Intercity Dubbeldekker, the renovated NS DD-AR train
 * Nimzo-Indian Defence, a chess opening
 * Srettha Thavisin (born 1962), nicknamed Nid, Prime Minister of Thailand