| ILSC | Illinois, South Central 
| Others |
| ILSC | Individualized Learning Support Center
| Others |
| ILSC | Integrated Living Systems Consortium
| Others |
| ILSC | Integrated Logistics Support Center
| Others |
| ILSC | Integrated Logistics Support Concept
| Others |
| ILSC | International Labor Statistics Center, Bureau of Labor Statistics
| Others |
| ILSC | International Language Schools of Canada
| Others |
| ILSC | International Language Services Conference
| Others |
| ILSC | International Laser Safety Conference
| Others |
| ILSC | International Leadership Student Council
| Others |
| ILSC | Introduction to Leadership Skills for Crews
| Others |
| ILSC | Iron Lakes Sports Club
| Others |