| Acronym | Definition |
|---|
| TTLC | The Treatment and Learning Centers (various locations) |
| TTLC | Taiwan Tobacco and Liquor Corporation |
| TTLC | Total Through-Life Cost |
| TTLC | Tiny Town Learning Center (New Jersey) |
| TTLC | Trail to Life Camp |
| TTLC | Turbo Tax Live Community (forum) |
| TTLC | Tulane Tower Learning Center (New Orleans, LA) |
| TTLC | Tasmanian Trades and Labor Council (Tasmania) |
| TTLC | Tall Timbers Land Conservancy (Tallahassee, FL; est. 1990) |
| TTLC | Turf, Tree and Landscape Conference |
| TTLC | Thai Toshiba Lighting Company (Thailand) |
| TTLC | Technology Transfer, Licensing and Commercialization (Florida Agricultural and Mechanical University) |
| TTLC | Top Tier Local Corporate |
| TTLC | Total Threshold Limits Concentration |
| TTLC | Twin Tiers Landowners Coalition (Addison, NY) |
| TTLC | Tater Tots Learning Center (Birmingham, AL) |
| TTLC | Trenton Teen Leadership Corps (Trenton, NJ) |