| ATMAC | Advanced Technology Manufacturing and Assembling City 
| Others |
| ATMAC | Agrichemical Trespass Ministerial Advisory Committee
| Others |
| ATMAC | Air Traffic Management Advisory Committee
| Others |
| ATMAC | Air Traffic Management Automated Center
| Others |
| ATMAC | Aircrew Training Munitions Account Custodian
| Others |
| ATMAC | American Trade Manufacturing Action Coalition
| Others |
| ATMAC | Australian Tobacco Marketing Advisory Committee
| Others |