| CSH(S) | Combat Support Hospital(S) 
| Others |
| CSHS | Cactus Shadows High School
| Others |
| CSHS | Cairns State High School
| Others |
| CSHS | California School of Health Sciences
| Others |
| CSHS | California School of Herbal Studies
| Others |
| CSHS | Caloundra State High School
| Others |
| CSHS | Canadian Society for Horticultural Science
| Others |
| CSHS | Canadian Society for Hydrological Sciences
| Others |
| CSHS | Canyon Springs High School
| Others |
| CSHS | Cardinal Spellman High School
| Others |
| CSHS | Carine Senior High School
| Others |
| CSHS | Carl Sandburg High School
| Others |
| CSHS | Carrizo Springs High School
| Others |
| CSHS | Cave Spring High School
| Others |
| CSHS | Cedar Springs High School
| Others |
| CSHS | Cedars-Sinai Health Services
| Others |
| CSHS | Center for Sustainable Health Spending
| Others |
| CSHS | Centre For Strategic Health Studies
| Others |
| CSHS | Centre for Studies on Human Stress
| Others |
| CSHS | Charles Smithgall Humane Society
| Others |
| CSHS | Cheyenne South High School
| Others |
| CSHS | Children's Special Health Services
| Others |
| CSHS | Churchlands Senior High School
| Others |
| CSHS | Clarkstown South High School
| Others |
| CSHS | Client side hierarchical select
| Others |
| CSHS | Coburg Senior High School
| Others |
| CSHS | College Station High School
| Others |
| CSHS | Connecticut School Health Survey
| Others |
| CSHS | Coordinated System of Homeless Services
| Others |
| CSHS | Coral Shores High School
| Others |
| CSHS | Coral Springs High School
| Others |
| CSHS | Craigavon Senior High School
| Others |
| CSHS | Crawfordsville Senior High School
| Others |
| CSHS | Cutaneous skeletal hypophosphatemia syndrome
| Others |