| Acronym | Definition |
|---|
| TTCI➣Travel and Tourism Competitiveness Index |
| TTCI➣Transportation Technology Center, Inc. (Association of American Railroads) |
| TTCI➣Time to Crack Initiation (civil engineering) |
| TTCI➣Titanium Tantalum Components Industries (Tamil Nadu, India) |
| TTCI➣Total Time Count Indicator |
| TTCI➣Togatoga Toothing Community Italia (online community; bluetooth) |