NYG or nyg may refer to:
- Marine Corps Air Facility Quantico (IATA and FAA LID: NYG), a United States Marine Corps airfield located within Marine Corps Base Quantico, Virginia
- New York Giants, a National Football League team that uses this abbreviation for box scores and television scoring displays
- New York Guard, the State Defense Force (SDF) of New York State and one of the four branches of the New York Military Forces (NYMF)
- Nyindu language (ISO 639-3: nyg), a Bantu language of the Democratic Republic of the Congo