| Acronym | Definition |
|---|
| ATNA➣Audit Trail and Node Authentication (security profile) |
| ATNA➣Australasian Trained Nurses' Association (est. 1899) |
| ATNA➣All Talk No Action |
| ATNA➣Amateur Television of North America |
| ATNA➣Annual Training Needs Assessment |
| ATNA➣Auto Trim of North America (distributors network) |