the National Geographic Society

Naval Gunfire Support, the practice of firing at land based targets from offshore

National Grid Service, UK Academic Computing Grid

Nortel Government Solutions

the National Garden Scheme a British organisation which promotes the opening of private gardens for charity.

Next Generation Security Software (NGS), a UK-based computer security company.

the National Geodetic Survey, a service operating under the control of the National Oceanic and Atmospheric Administration

a JavaScript engine, NGS (JavaScript engine)

IATA airport code for Nagasaki Airport in Omura, Nagasaki Prefecture, Japan