| COBA | Carrying On Business As 
| Others |
| COBA | Celtic Order of benedictine Adorationists
| Others |
| COBA | Central Ontario Badminton Association
| Others |
| COBA | Central Ontario Baseball Association
| Others |
| COBA | Central Oregon Builders Association
| Others |
| COBA | Childhood Obesity Bay Area
| Others |
| COBA | Coalition of Oklahoma Breastfeeding Advocates
| Others |
| CoBA | Commercial Broadcasters Association
| Others |
| COBA | Coordination of Benefits Agreement (Centers for Medicare & Medicaid Services)
| Others |
| COBA | Council of Black Administrators
| Others |