CIK
| Acronym | Definition |
|---|---|
| CIK | Central Index Key (SEC) |
| CIK | Cytokine Induced Killer (cell type) |
| CIK | Commission Internationale de Karting (French) |
| CIK | Crawling Insect Killer |
| CIK | Confederazione Italiana Kendo (Italian Kendo Federation) |
| CIK | Cash Is King (Indianapolis, IN) |
| CIK | Contribution in Kind |
| CIK | Crypto Ignition Key |
| CIK | Content Is King |
| CIK | Christ Is King (Ellicott City, MD internet service provider) |
| CIK | Company Identification Number |
| CIK | Cryptographic Identification Key |
| CIK | Concrete on Rolled I-Beam Composite (civil engineering) |