| Acronym | Definition |
|---|
| TCN➣Tri-County North (Ohio school district) |
| TCN➣Tokyo Cable Network (Tokyo, Japan) |
| TCN➣transparent content negotiation |
| TCN➣The Communication Network |
| TCN➣Tape Copy Needed |
| TCN➣Throughput Class Negotiation |
| TCN➣Tetracycline |
| TCN➣The Coding Network (Beverly Hills, CA) |
| TCN➣Third Country National(s) |
| TCN➣The Clinical Neuropsychologist (journal; Taylor & Francis Group) |
| TCN➣Topology Change Notification |
| TCN➣Transportation Control Number |
| TCN➣Telecommunications Network |
| TCN➣Tactical Communications Node (US Army) |
| TCN➣The Comcast Network |
| TCN➣Train Communication Network |
| TCN➣Tumor Cell Necrosis |
| TCN➣Transaction Control Number |
| TCN➣The Cartoon Network |
| TCN➣Tactical Component Network |
| TCN➣Trigeminocervical Nucleus |
| TCN➣Tactical Air Navigation (TACAN) |
| TCN➣Troop Contributing Nations |
| TCN➣Think College Now |
| TCN➣Tama Cable Network (Tokyo, Japan) |
| TCN➣Tokushima Cable Network (Japan) |
| TCN➣Terminal Control Number (US IRS) |
| TCN➣Torah Conferencing Network |
| TCN➣Triathlon Club Nantais (Nantes, France) |
| TCN➣Terrestrial Cosmogenic Nuclide (earth science) |
| TCN➣Ticket Control Number (airlines) |
| TCN➣Thematic Collection Networks (digital research; US NSF) |
| TCN➣Take Care Now Ltd (UK healthcare provider) |
| TCN➣Total Combustible Nitrogen |
| TCN➣Tyoga CareNet (Pennsylvania) |
| TCN➣Traditional Care Network (healthcare program) |
| TCN➣Toronto Community News (Canada) |
| TCN➣Toraja Cyber News (Indonesian online media) |
| TCN➣Title Control Number (library cataloging) |
| TCN➣Transforming Churches Network (Missouri) |
| TCN➣Test Change Notice |
| TCN➣Terrestrial Communications Network |
| TCN➣Third Country Nation |
| TCN➣Traffic Control Number |
| TCN➣Tactical Control Network |
| TCN➣The Claymore Nation (gaming) |
| TCN➣Task Control Number |
| TCN➣Test Case Notation (ISO) |
| TCN➣Technician Corporation |
| TCN➣Travel Card Number (Sprint) |
| TCN➣Temporary Change Notification |
| TCN➣Theater Communications Network |
| TCN➣Terran Confederation News |
| TCN➣Technical Change Notice |
| TCN➣Trans-Country National |
| TCN➣Team Crip Nasty (hunting group; Michigan) |
| TCN➣Tracing Change Notice |
| TCN➣Travel Change Notification |
| TCN➣Telephone Computer Network, Inc. (Utah) |
| TCN➣Technical Cooperation Agency |
| TCN➣The Continuum Network (Toronto, Ontario, Canada) |
| TCN➣Turbo Chat Network |
| TCN➣Transaction Control Network |
| TCN➣Troubleshooting Cisco Network |
| TCN➣Truck Consignment Note (freight shipping) |