| COSCA | Central Ohio Saddle Club Association 
| Others |
| COSCA | Central Ohio Soccer Coaches Association
| Others |
| COSCA | Commissioner Of Security Civil Aviation
| Others |
| COSCA | Conejo Open Space Conservation Agency
| Others |
| COSCA | Confederation of Scottish Counselling Agencies
| Others |
| COSCA | Conference of State Court Administrators
| Others |
| COSCA | Core Outcome Set for Cardiac Arrest
| Others |
| COSCA | Council Of Scottish Clans and Associations
| Others |