TNO
The abbreviation TNO stands for the terms:
- Aerounion - Aerotransporte de Carga Union , a Mexican airline (ICAO code)
- Tamarindo , IATA code for the airport in Costa Rica
- Territoires du Nord-Ouest in the French language. It is one of the three territories directly subordinate to the Canadian federal government.
- Toegepast Natuurwetenschappelijk Onderzoek , see Dutch Organization for Applied Scientific Research
- Trans-Neptunian object , term for every astronomical object in the solar system beyond the orbit of the planet Neptune