| ISOCS | In Situ Object Calibration Software 
| Others |
| ISOCS | In Situ Object Counting Systems
| Others |
| ISOCS | Indian Society of Cacti Succulents
| Others |
| ISOCS | International School of Central Switzerland
| Others |
| ISOCS | International Society for Olfaction and Chemical Sensing
| Others |
| ISOCS | International Society on Olfaction and Chemical Sensing
| Others |
| ISOCS | International Symposium on Organic Chemistry of Sulfur
| Others |