TNG may refer to:
- Star Trek: The Next Generation, an American science fiction television series and part of the Star Trek franchise
- Degrassi: The Next Generation, a Canadian teen drama television series set in the Degrassi universe
- The Newlywed Game, an American television game show
- Samba TNG, a fork of the Samba networking protocol
- Speed Racer: The Next Generation, an American animated television series based on the classic Japanese Speed Racer franchise
- Tangier Ibn Battouta Airport (IATA code: TNG), an airport serving Tangier
- Telescopio Nazionale Galileo, a 3.58m Italian telescope located on the island of San Miguel de La Palma
- The Next Generation of Genealogy Sitebuilding, a genealogy software
- TN'G, a motor scooter brand of CMSI
- Touch 'n Go, smart card used by Malaysian toll expressway and highway operators
- Trans–New Guinea languages, an extensive family of Papuan languages spoken in New Guinea and neighboring islands
- Transitional National Government, interim government of Somalia from 2000–2004
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