JAK
| Acronym | Definition |
|---|---|
| JAK | Janus Kinase (aka Just Another Kinase) |
| JAK | Jakovlev (Soviet aircraft designer) |
| JAK | Jayne Ann Krentz (author; aka Amanda Quick and Jayne Castle) |
| JAK | Just Another Kinase (aka Janus Kinase) |
| JAK | Journalists Association of Korea (South Korea) |
| JAK | Japanese Association at Kearney (University of Nebraska, Kearney) |
| JAK | Jazakom Allaho Khairan (Arabic: May Allah Reward You; Thank You) |