| Acronym | Definition |
|---|
| CFSI | Comité Français pour la Solidarité Internationale (French: French Committee for International Solidarity; est. 1960; Paris, France) |
| CFSI | Congressional Fire Services Institute |
| CFSI | Center for Financial Services Innovation |
| CFSI | Community and Family Services International (Philippines) |
| CFSI | Conflict Free Smelter Initiative |
| CFSI | Children's Film Society of India |
| CFSI | Counterfeit, Fraudulent, and Suspect Items |
| CFSI | Complete Friends Script Index (TV show) |
| CFSI | Chugach Federal Solutions, Inc. (Alaska) |
| CFSI | Comité Français de la Semoulerie Industrielle (French: French Committee of the Semolina Industry; Paris, France) |
| CFSI | Coverdell Forensic Science Improvement (criminal justice grant program) |