CTNA
| Acronym | Definition |
|---|---|
| CTNA | Continental Tire North America, Inc |
| CTNA | Catholic Telecommunications Network of America |
| CTNA | Catholic Television Network of America |
| CTNA | Comitato Territoriale Novarese Acqua (Italian: Novarese Territorial Water Committee) |
| CTNA | CeramTec North America |
| CTNA | Connecticut Region of Narcotics Anonymous |