CTUA
| 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) |