| Acronym | Definition |
|---|
| TLI | Transport Level Interface |
| TLI | Type Library Information |
| TLI | Transport Layer Interface |
| TLI | The Lonely Island (comedy team) |
| TLI | The Logistics Institute |
| TLI | The Latest Information (website; www.thelatestinformation.com) |
| TLI | Trans-Lunar Injection |
| TLI | Taipei Language Institute |
| TLI | Tucker-Lewis Index |
| TLI | Total Lymphoid Irradiation |
| TLI | Texas Learning Index (student assessment) |
| TLI | Teaching and Learning Initiative (various schools) |
| TLI | The Learning Institute |
| TLI | Tank Level Indicator |
| TLI | Too Little Information |
| TLI | Tony Buzan Licensed Instructor (Netherlands) |
| TLI | The Leadership Institute (Orange, CA) |
| TLI | Teklink International, Inc. (Naperville, IL) |
| TLI | Transport Library Interface (network management) |
| TLI | Technology Leadership Institute |
| TLI | Top Line Initiative (various companies) |
| TLI | Thin Layer Imaging |
| TLI | Tertiary Level Institution |
| TLI | The Laurasian Institution |
| TLI | Top of Logging Interval (energy production) |
| TLI | TCT Logistics Inc |
| TLI | Transport Logistique Interim (French: Interim Transport Logistics) |
| TLI | The Laborer's Institute (Aurora, Colorado) |
| TLI | Treaty Limited Item(s) |
| TLI | Trypsinogen Like Immunoreactivity (veterinary diagnostics for canines/felines with pancreatic disorders) |
| TLI | Telephone-Line Interface |
| TLI | Textes, Langages, Imaginaires (French educational program; University of Nantes) |
| TLI | The Lost Island (gaming) |
| TLI | Time-Life International |
| TLI | Toastmaster's Leadership Institute |
| TLI | Traffic Load Index (Air Traffic Control) |
| TLI | Thought and Language Index |
| TLI | The Local Idiots (band) |
| TLI | Transactions et Locations Immobilières (French: Rentals and Real Estate Transactions) |
| TLI | Technology Leadership Innovation (TLI Software Pvt Ltd) |
| TLI | Transmission Links Ireland Ltd (Co Kerry, Ireland) |
| TLI | Thermic Laboratory Inc (Claremont, NH) |
| TLI | Télévision Locale Indépendante (French: Local Independent TV) |