TGN may refer to:

• Tarragona, abbreviation of the city of Tarragona, in Catalonia
• Thai Global Network, a Thai satellite television channel
• Texas Government Newsletter, for college students
• Tyco Global Network, fiber optic network by Tyco International
• Trans Golgi network in biology
• IEEE 802.11n Task Group N
• Thyroglobulin, a protein
• Getty Thesaurus of Geographic Names
• TGN (AM) radio station, Guatemala
• Latrobe Regional Airport, IATA airport code "TGN"

This disambiguation page lists articles associated with the title TGN.
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