| Abbreviation | Definition |
|---|---|
| RK | Retail Kit |
| RK | Retarded Kumar |
| RK | Retinal Keratotomy |
| RK | Retractable Keel |
| RK | Retro Kid |
| RK | Ribit King |
| RK | Rice Krispy |
| RK | Rich Kid |
| RK | Richie Kotzen |
| RK | Riddle Killer |
| RK | Rilo Kiley |
| RK | Ritu Khanna |
| RK | Road King |
| RK | Rob Knob |
| RK | Robert Kraft |
| RK | Roobahe Koor |
| RK | Rookie King |
| RK | Routing Key |
| RK | Roz Kaveney |
| RK | Rudin Keisler |