| Abbreviation | Definition |
|---|---|
| RKB | RNA knowledge base |
| RKB | rotary kelly bushing |
| RKB | ROULEMENT KUGELLAGER and BEARING |
| RKB | Russell Knox Building |
| RKBA | Right to Keep and Bear Arms |
| RKC | Rachels Kewl Craftings |
| RKC | Radio Kaos Caribou |
| RKC | Raising Kingdom Champions |
| RKC | Ras Kass Central |
| RKC | Revised Kyoto Convention |
| RKC | Robinson Kurtin Communications |
| RKC | Russian Kettlebell Challange |
| RKC | Russian Kettlebell Challenge |
| RKD | Really Kool Decapsulator |
| RKD | Reining Kings of Destruction |
| RKD | Remote Key Distribution |
| RKD | Robinson Keefe Devane |
| RKDS | Romi Khosla Design Studio |
| RKDS | Ryu Kozeki Design Studio |
| RKF | Real KAREN Family |