ISSSC
| Acronym | Definition |
|---|---|
| ISSSC | Institute for the Study of Secularism in Society and Culture (Trinity College) |
| ISSSC | International Seniors' Speed Skating Committee |
| ISSSC | International Seppala Siberian Sleddog Club |
| ISSSC | International Society for the Suppression of Savage Customs (fictional society; Heart of Darkness) |