Editing TN

{{wikt|TN}}
'''Tn''' or '''TN''' may refer to:
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== Businesses and organizations ==
* [[Air Tahiti Nui]] (IATA airline designation "TN" since 1998), a French Polynesian airline
* [[Texas and Northern Railway]], an American railway (reporting mark "TN")
* {{lang|es|[[Todo Noticias]]|italic=no}}, an Argentine cable news network
* [[Trans Australia Airlines]] (IATA airline designation "TN" until 1994), a defunct Australian airline
* {{lang|fr|[[Transports en commun de Neuchâtel et environs]]}}, a public transport operator in Neuchâtel, Switzerland

== Places ==
* [[Tamil Nadu]], a state in southern India (ISO abbreviation "IN-TN")
* [[Tennessee]], US (postal abbreviation "TN")
* [[Tonbridge]], a region in England (postcode "TN")
* [[Tunisia]] (ISO 3166-1 country code "TN")
* [[Trentino]], a province in Italy (ISO abbreviation "IT-TN")
* [[North Tipperary]], a former county of Ireland (car plate code "TN")

== Science and technology ==
* [[.tn]], the country code top level domain (ccTLD) for Tunisia
* [[TN-C#TN networks|TN network]], a type of earthing system for protection in electricity network
* [[Neel Temperature]], the temperature at which an antiferromagnetic material becomes paramagnetic (represented as T<sub>N</sub>)
* ''[[Tetraodon]]'', a genus of pufferfish
* [[Trigeminal neuralgia]], a neuropathic disorder
* [[Transposon]] (when immediately followed by a number), a DNA sequence that can change positions
* [[Twisted nematic]] field effect, the technology that made LCD displays practical
* [[Thoron]], symbol Tn, a sometimes used name for the nuclide [[radon-220]]

== Other uses ==
* [[TN status]] ("Treaty national", or "Trade NAFTA"), an immigration status of a Canadian or Mexican citizen working in the USA under the NAFTA agreement
* [[Telephone number]], in the telecommunications industry
* Tom Next (or Tomorrow Next), a financial trade which starts tomorrow and [[settlement (finance)|settles]] in the next trading day
* [[Trillion]] ("TN" or "tn"), a number equal to 10<sup>12</sup> (short scale) or 10<sup>18</sup> (long scale)
* [[Tswana language]] (ISO 639-1 language code)
* [[Translator]]s Note ("TN" or "t/n")
* {{lang|it|Turbonave}}, an Italian [[ship prefix]], indicating that the ship was propelled by a [[gas turbine|turbine engine]].

{{disambiguation}}