Other
- NASDAQ Global Select Market, see NASDAQ#Market tiers
- Neutral grain spirit, or pure grain alcohol
- Next-generation sequencing, a type of DNA sequencing
- Ninja Gaiden Sigma, a video game
- Nitrogen Generation System, found in aircraft to reduce fire risk in fuel tanks
NGS also refers to:
- IATA airport code for Nagasaki Airport in Omura, Nagasaki, Japan
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