| COSA | Campus Organization for Social Activities 
| Others |
| COSA | Car Wash Owners and Suppliers Association
| Others |
| COSA | Central Ohio Soaring Association
| Others |
| COSA | Central Ohio Soccer Association
| Others |
| COSA | Child Occupational Self Assessment
| Others |
| COSA | Children's Organization of Southeast Asia
| Others |
| COSA | Church Of the Scientific Advent
| Others |
| COSA | Circle of Support and Accountability
| Others |
| COSA | Circles of Safety and Accountability
| Others |
| COSA | Circles of Support and Accountability
| Others |
| COSA | City Of Saint Augustine
| Others |
| COSA | City of San
| Others |
| COSA | City of San Antonio
| Others |
| COSA | City of St Augustine
| Others |
| COSA | Colliery Officials and Staffs Area
| Others |
| COSA | Colliery Officials and Staffs Association
| Others |
| COSA | Colorado Open Space Alliance
| Others |
| COSA | Committee On Staff Affairs
| Others |
| COSA | Committee On Student Activities
| Others |
| COSA | Committee On Sustainability Assessment
| Others |
| COSA | Communications on Stochastic Analysis
| Others |
| COSA | Community Outreach Student Alliance
| Others |
| COSA | Company of Science and Art
| Others |
| COSA | Company of Science Art
| Others |
| COSA | Complementary Objects for Software Applications
| Others |
| COSA | Confederation of Oregon School Administrators
| Others |
| COSA | Construction Open Software Alliance
| Others |
| COSA | Coordinator Of Student Activities
| Others |
| COSA | Coptic Orphans Support Association
| Others |
| COSA | Cornerstone of Successful Achievement
| Others |
| COSA | Cosmetic Outstanding Service Awards
| Others |
| COSA | Cost Of Sales Adjustment
| Others |
| COSA | Council of School Attorneys
| Others |
| COSA | Council of State Archivists
| Others |
| COSA | Council Of Student Activites
| Others |
| COSA | County Office of Services for the Aging
| Others |