| Term | Full Form | Category |
|---|---|---|
| TNOA | Tamil Nadu Olympic Association | Others |
| TNOA | Tamil Nadu Ophthalmic Association | Others |
| TNOA | Texas Narcotic Officers Association | Others |
| TNOA | Texas Narcotic Officers' Association | Others |
| TNOA | Tri N Octyl Aluminum | Others |
| TNOA | True North Owners Association | Others |