| 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 |