| Acronym | Definition |
|---|
| FCSI | Foodservice Consultants Society International |
| FCSI | Fellow of the Canadian Securities Institute |
| FCSI | Fellow of the Canadian Securities Institute (Canadian Securities Institute) |
| FCSI | Football Club Sud Isère (French: South Isère Football Club: Isère, France) |
| FCSI | Financial Computer Support, Inc. (Oakland, MD) |
| FCSI | Fédération des Centres Sociaux de l'Isère (French: Federation of Social Centers in Isère; Isère, France) |
| FCSI | Franklin Collection Service, Inc. (Mississippi) |
| FCSI | Fournisseur de Conseils et de Services Informatiques (French: Provider of Consulting and Information Technology Services) |
| FCSI | Fiber Channel Systems Initiative |
| FCSI | Full Channel State Information |
| FCSI | Franche Comté Sécurité Incendie (French fire safety company) |
| FCSI | Fellow, Constuction Specifications Institute (honorary title) |
| FCSI | Field Consulting and Services, Inc. (Orlando, FL) |
| FCSI | Fellow of the Chartered Institute of Securities and Investments |