TNO may refer to:
- Franco-Ténois, the widespread community of francophones who reside in the Northwest Territories
- Netherlands Organisation for Applied Scientific Research (Nederlandse Organisatie voor Toegepast Natuurwetenschappelijk Onderzoek), an independent research organization in the Netherlands
- Tamarindo Airport (IATA code: TNO), a private airport that serves Tamarindo, Costa Rica
- Tête nucléaire océanique, a French thermonuclear warhead
- Thai National Observatory, part of the National Astronomical Research Institute of Thailand
- TNO intestinal model, systems mimicking the digestive tract
- Trans-Neptunian object, any minor planet in the Solar System that orbits the Sun at a greater average distance than Neptune
- Texas and New Orleans Railroad, a railroad in Texas and Louisiana. Was bought by Southern Pacific in 1881, and merged with Southern Pacific in 1961.
This disambiguation page lists articles associated with the title TNO.If an internal link led you here, you may wish to change the link to point directly to the intended article. Category: