| CNAA | Cardinal Newman Athletic Association 
| Others |
| CNAA | Central Nassau Athletic Association
| Others |
| CNAA | Certified in Nursing Administration Advanced
| Others |
| CNAA | Certified Nursing Assistant Advanced
| Others |
| CNAA | Chinese National Academy of Arts
| Others |
| CNAA | Commission on Native American Affairs
| Others |
| CNAA | Commission on North American Affairs
| Others |
| CNAA | Committee on Nucleation and Atmospheric Aerosols
| Others |
| CNAA | Community Needs Assessment Approach
| Others |
| CNAA | Contemporary Northwest Art Awards
| Others |
| CNAA | Coro National Alumni Association
| Others |
| CNAA | Cottonmill and Nunnery Allotment Association
| Others |
| CNAA | Council for National Academic Awards
| Others |