{{wiktionary}} '''TNO''' may refer to: == Science == * TNO intestinal model, in gastroenterology * Thai National Observatory, atop Doi Inthanon, Thailand * Netherlands Organisation for Applied Scientific Research ({{langx|nl|Nederlandse Organisatie voor Toegepast Natuurwetenschappelijk Onderzoek|link=no}}) * Trans-Neptunian object, in planetology
== Transport == * Texas and New Orleans Railroad, United States (1856–1961) * Tamarindo Airport, Costa Rica (IATA:<code>TNO</code>)
== Other uses == * {{lang|fr|Tête nucléaire océanique|italics=no}}, a French thermonuclear warhead * Franco-Ténois, a Canadian francophone community * ''The New Order: Last Days of Europe'', a mod for the video game ''Hearts of Iron IV''. {{disambiguation}}