| COSA | Central Ontario Soaring Association | 安大略省中部翱翔协会 |
| COSA | Central Ohio Soaring Association | 俄亥俄州中部翱翔协会 |
| COSA | Coptic Orphans Support Association | 科普特孤儿支持协会 |
| COSA | Committee On Student Activities | 学生活动委员会 |
| COSA | Children of Substance Abuse | 药物滥用儿童 |
| COSA | Confederation of Oregon School Administrators | 俄勒冈州学校管理者联合会 |
| COSA | Corps Service Area | 军团服务区 |
| COSA | Complementary Objects For Software Applications | 软件应用程序的补充对象 |
| COSA | Committee On Staff Affairs | 工作人员事务委员会 |
| COSA | City Of Saint Augustine | 圣奥古斯丁市 |
| COSA | Casualties of Sexual Allegations | 性指控的伤亡 |
| COSA | Clustering Objects on Subsets of Attributes | 在属性子集上聚类对象 |
| COSA | Cost-of-Service Analysis | 服务成本分析 |
| COSA | Communications Open System Architecture | 通信开放系统体系结构 |
| COSA | Council of State Archivists | 国家档案管理员委员会 |
| COSA | Combat Operational Support Aircraft | 作战支援飞机 |
| COSA | CÁmara Oficial Sindical AgrÍcola | CÁmara Oficial Sindical AgrÍcola |
| COSA | Circles of Support and Accountability | 支持和问责圈 |
| COSA | Computational Social Aggregation | 计算社会聚合 |
| COSA | Coordinator of Student Activities | 学生活动协调员 |
| COSA | Codependents of Sex Addicts | 性上瘾者的共同依赖 |
| COSA | Council Of Student Activites | 学生活动理事会 |
| COSA | Company of Science & Art | 科学和艺术的公司 |