| Acronym | Definition |
|---|
| CTUA➣Calcutta Tram Users Association (est. 2016; Calcutta, India) |
| CTUA➣Confederation of Trade Unions of Armenia |
| CTUA➣Croatian Trade Union Association |
| CTUA➣Combustion Technology University Alliance (applied research program; National Energy Technology Laboratory; Pittsburgh, PA) |
| CTUA➣Chickasaw Tribal Utility Authority (Ada, OK) |
| CTUA➣Charles Taylor Underwriting Agencies Limited (various locations) |