| Acronym | Definition |
|---|
| ICSP | In Circuit Serial Programming (MicroCHIP) |
| ICSP | International Committee on Systematics of Prokaryotes |
| ICSP | International Conference on Signal Processing |
| ICSP | Insurance Company of the State of Pennsylvania |
| ICSP | Institute of Certified Sales Professionals (Nigeria) |
| ICSP | Interagency Committee on Standards Policy (advises the US Secretary of Commerce and other Executive branch agencies in standards policy matters) |
| ICSP | International Conference on Shot Peening |
| ICSP | Interactive Computer Service Provider |
| ICSP | Inter-Carrier Service Provider |
| ICSP | Integrated Cost and Scheduling Package |
| ICSP | Integrated Communications Support Plan |
| ICSP | International Corporate Service Provider (Seychelles) |