HTN

• Hierarchical task network, planning formalism in artificial intelligence
• "Homesteading the Noosphere", essay on computer programming

• Hypertension

• Home Theater Network, defunct movie subscription service
• Houghton Mifflin, now part of Houghton Mifflin Harcourt
• Hughes Television Network, defunct American television network

• Hammonton station, New Jersey, United States
• Hathiyan railway station, Pakistan
• Hatton railway station, Sri Lanka
• Hatton (Warwickshire) railway station, England
• Hotan Airport, Xinjiang, China
• Houten railway station, Netherlands

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