| 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) |