RKA
| Acronym | Definition |
|---|---|
| RKA | Rencana Kegiatan dan Anggaran (Indonesian: Activity Plan and Budget) |
| RKA | Riverdale Kingsbridge Academy (Bronx, New York) |
| RKA | Ranged Killing Attack (gaming) |
| RKA | Rhinebeck Karate Academy (Rhinebeck, NY) |
| RKA | Relativistic Klystron Amplifier |
| RKA | Rocket Knight Adventures (video game) |
| RKA | Rossiskaja Kosmitska Agentura (Russian Space Agency; now Rosaviakosmos) |
| RKA | Rekey Agent |
| RKA | Right Knee Arthroscopy |
| RKA | Rayhaan Khan Ahmed (UK) |