| Abbreviation | Definition |
|---|---|
| CTS | China Travel Service |
| CTS | Cordless Tools Store |
| CTSI | Coherent Technical Services Inc |
| CTSI | Commonwealth Technical Services Inc |
| CTSI | County Technical Services Inc |
| CTSO | Career Technical Sales Organization |
| CTT | Cyprus Trade Tours |
| CTTI | Chart Tech Tool Inc |
| CTTI | Cooling Tower Technologies Inc |
| CTTL | Caribbean TECH TrendZ Ltd |
| CTWA | Chuckanut Trail Water Association |
| CTWA | Continental Tire West Africa |
| CTWD | Colin Thompson Web Design |
| CUB | Carlton And United Breweries |
| CUC | Caribbean Utilities Company |
| CUC | Commonwealth Utilities Corporation |
| CUCI | Cline Utility Contractors Inc |
| CUF | Companhia União Fabril |
| CUFAI | Calawis Upland Farmers Association Inc |
| CUFL | Central Utah Federation of Labor |