CISK
| Acronym | Definition |
|---|---|
| CISK | Conditional Instability of the Second Kind |
| CISK | Cytokine-Independent Survival Kinase |
| CISK | Cast Iron Surround Kit (fireplace accessory) |
| CISK | Communities in Schools of Kent (est. 1991; formerly Kent Community Council for At-Risk Children and Youth; Kent, WA) |