Tn or TN may refer to: 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") Todo Noticias, an Argentine cable news network. Trans Australia Airlines (IATA airline designation "TN" until 1994), a defunct Australian airline. Transports en commun de Neuchâtel et environs, a public transport operator in Neuchâtel, Switzerland. Places.
https://en.wikipedia.org/wiki/TN