| CSID | Call Segment Id 
| Others |
| CSID | Called Station Identifier
| Others |
| CSID | Called Subscriber Id
| Others |
| CSID | Canadian Social Investment Database
| Others |
| CSID | Center for Sustainable Infrastructure Development
| Others |
| CSID | Center for the Study of Institutional Diversity
| Others |
| CSID | Center for the Study of Islam and Democracy
| Others |
| CSID | Center for the Study of Islam Democracy
| Others |
| CSID | Centre for Services and Information on Disability
| Others |
| CSID | Centre for Sustainable International Development
| Others |
| CSID | Cluster System Id
| Others |
| CSID | Combined Services Installation Drawing
| Others |
| CSID | Congenital Sucrase Isomaltase Deficiency
| Others |
| CSID | Congenital Sucrase-Isomaltase Deficiency
| Others |
| CSID | Congenital sucrose isomaltase deficiency
| Others |
| CSID | Consumer Service and Information Division
| Others |
| CSID | Corporate Scene Idea Detection
| Others |
| CSID | Corporate Strategy and Industrial Development
| Others |
| CSID | Croatian Society Of Infectious Diseases
| Others |