| ISCI | Idaho State Correctional Institution 
| Others |
| ISCI | Incomplete Spinal Cord Injury
| Others |
| ISCI | Individualized Supplementary Calculus Instruction
| Others |
| ISCI | Industrial Safety Consultants Incorporated
| Others |
| ISCI | Industry Standard Coding Identification
| Others |
| ISCI | Industry Standard Commercial Identifier
| Others |
| ISCI | Information Sciences Consulting Inc
| Others |
| ISCI | Inova Schar Cancer Institute
| Others |
| ISCI | Interdisciplinary Stem Cell Institute
| Others |
| ISCI | International Society for Child Indicators
| Others |
| ISCI | International Solar Cities Initiative
| Others |
| ISCI | International standard collection identifier
| Others |
| ISCI | International Standard Commercial Identification
| Others |
| ISCI | International Standardized Commercial Identifier
| Others |
| ISCI | International State Crime Initiative
| Others |
| ISCI | International Stem Cell Initiative
| Others |
| ISCI | Irish Sports Coaches Institute
| Others |
| ISCI | ISA Security Compliance Institute
| Others |
| ISCI | Islamic Supreme Council of Iraq
| Others |