| CSTP | Calendar Server Transfer Protocol 
| Others |
| CSTP | California Standards for the Teaching Profession
| Others |
| CSTP | Center for Science and Technology Policy
| Others |
| CSTP | Center for South Texas Programs
| Others |
| CSTP | Center for Strengthening the Teaching Profession
| Others |
| CSTP | Center for the Study and Treatment of Pain
| Others |
| CSTP | Center for the Study of Tobacco Products
| Others |
| CSTP | Certified Security Testing Professional
| Others |
| CSTP | Certified Software Test Professional
| Others |
| CSTP | Certified Student Travel Professional
| Others |
| CSTP | Channel Station Time and Polarization
| Others |
| CSTP | Client Server Transaction Processing
| Others |
| CSTP | Clinical Scientist Training Program
| Others |
| CSTP | Commercial SATCOM Terminal Program
| Others |
| CSTP | Commercial Satellite Terminal Program
| Others |
| CSTP | Committee for Scientific and Technological Policy
| Others |
| CSTP | Common Spanning Tree Protocol
| Others |
| CSTP | Comprehensive Stuttering Therapy Program
| Others |
| CSTP | Cooperative Shark Tagging Program
| Others |