COSCI
| Acronym | Definition |
|---|---|
| COSCI | Collectif des ONG (Organisations Non Gouvernementales) de Lutte Contre le Sida en Côte d'Ivoire (French: Collective of Non-Governmental Organizations fighting against AIDS in Ivory Coast) |
| COSCI | Calpine Operating Services Company, Inc. (Calpine Corporation; Houston, TX) |
| COSCI | Complete Open Shell Configuration Interaction |