NTT may refer to:
- Nippon Telegraph and Telephone, Japan
- New Technology Telescope, a 3.6m telescope at La Silla Observatory, Chile
- NTT Records, small recording company responsible for the Giant Robot album
- Number theoretic transform, a mathematical transform
- Nusa Tenggara Timur, a province of Indonesia
- New trade theory, an economic theory
- Niuatoputapu Airport, IATA code
- New Technology Train of the New York City Subway
|This disambiguation page lists articles associated with the title NTT.
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