Rank | Abbreviation | Meaning |
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***** | COSSA | Central Ohio Senior Softball Association
| |
***** | COSSA | Central Ontario Secondary School Athletics
| |
***** | COSSA | Consortium of Social Science Associations
| |
**** | COSSA | Commission on Spanish Speaking Affairs
| |
*** | COSSA | CSIRO (Commonwealth Scientific and Industrial Research Organisation) Office of Space Science & Applications
| |
*** | COSSA | Computer Science Students Association
| |
*** | COSSA | Commonwealth Office of Space Science and Applications
| |
** | COSSA | Central Ontario Secondary Schools Association
| |
** | COSSA | Containerized Shipment and Storage of Ammunition
| |
** | COSSA | Central Oregon Shooting Sports Association
| |
* | COSSA | Canyon Owyhee School Service Agency
| |