| Acronym | Definition |
|---|
| TNI➣Tahitian Noni International (beverage company; Orem, UT) |
| TNI➣Transnational Institute (Amsterdam, Netherlands) |
| TNI➣Thai-Nichi Institute of Technology (Bangkok, Thailand) |
| TNI➣Targul National Imobiliar (Romanian: National Real Estate Fair) |
| TNI➣Troponin I |
| TNI➣Tentara Nasional Indonesia |
| TNI➣Trusted Network Interpretation |
| TNI➣The National Investor (United Arab Emirates) |
| TNI➣The New Information |
| TNI➣The Neuroscience Institute (Cincinnati, OH) |
| TNI➣Transition Networks, Inc. |
| TNI➣Telephone Network Interface |
| TNI➣Training Needs Identification |
| TNI➣Tourisme News International (French: Tourism News International; UK; est. 2005) |
| TNI➣Telephone Number Inventory |
| TNI➣Tejas New Instruction (memory protocol, computing) |
| TNI➣Tiny Natural Inclusion (philatelic imperfection) |
| TNI➣Telecommunications & Navigation Institute |