| Abbreviation | Definition |
|---|---|
| CMS | Zhongguo Shuxuehui |
| CMS | Zhongguo Shu xuehui |
| CMSA | California Mission Studies Association |
| CMSA | Case Management Society of America |
| CMSA | Classical Mandolin Society of America |
| CMSC | Chamber Music Society of Colombo |
| CMSC | Coordinate Metrology Society Conference |
| CMSL | Chamber Music Society of Logan |
| CMSNA | Chinese Music Society of North America |
| CMSNA | Clan MacLaren Society of North America |
| CMSNA | Clan MacMillan Society of North America |
| CMSNA | Clan MacNab Society of North America |
| CMSNA | Clan Moncreiffe Society of North America |
| CMSNA | Clan Morrison Society Of North America |
| CMSNE | Case Management Society of New England |
| CMSO | Chamber Music Society of Oregon |
| CMSS | Council of Medicine Specialty Societies |
| CMUPS | Canadian Mission to Unreached Peoples Society |
| CNA | Association Canadienne de Numismatique |
| CNA | Canadian Numismatic Association |