TRN

TRN may refer to:

• The trn newsreader, a threading variant of rn
• Taiga Rescue Network
• Talk Radio Network, an American syndicator of talk radio programming
• Target Reference Number, a unique integer id given to a collection of points that describe the location of an object over time. Sometimes referred to as the Track Report Number
• Terrain reference navigation
• Thai Rural Net
• Thalamic reticular nucleus, part of the ventral thalamus
• The Real News, a member supported, video news network
• The Rail Network, an American television network
• The Radio Network, a New Zealand radio network
• The Referral Network Inc., The Referral Network of Canada Inc., a Canadian-based business networking organization
• Total Return Net, a term from investment indices
• Transaction Reference Number, a term from bank wire transfer
• Transports Régionaux Neuchâtelois, a Swiss railway company
• Turin International Airport (IATA: TRN), an airport in Turin, Italy
• Trn (name), a surname of Czech descent
• Topology representing network, Topology representing neural network

Location

• Trn (Macedonia), a village in Macedonia
• Trn (Kuršumlija), Serbia
• Trn, Republika Srpska