| Abbreviation | Definition |
|---|---|
| RK | Rudolf Kornbrath |
| RK | Ruf Kompressor |
| RK | Rukometni Klub |
| RK | Rurouni Kenshin |
| RKA | Rachael Kay Albers |
| RKA | Rahul Kavel and Aashik |
| RKA | Ranged Killing Attack |
| RKA | Rayhaan Khan Ahmed |
| RKA | related key attack |
| RKA | Relativistic Klystron Amplifier |
| RKA | Right Knee Arthroscopy |
| RKA | Riverdale / Kingsbridge Academy |
| RKA | Riverdale Kingsbridge Academy |
| RKA | Rocket Knight Adventures |
| RKA | Rossiskaja Kosmitska Agentura |
| RKB | Rachel Kramer Bussel |
| RKB | Radio Kyushu Broadcasting |
| RKB | Ress Karamba Bar |
| RKB | Reverse Knowledge Base |
| RKB | Rig Kelly Bushing |