| Abbreviation | Definition |
|---|---|
| RXTE | Rossi X-ray Timing Explorer |
| RXV | Reliability Xperience Value |
| RY | Real Year |
| RY | Rebel Yell |
| RY | Recreate Yourself |
| RY | Reinvent Yourself |
| RY | Reporting Year |
| RY | Richard and Yasmin |
| RY | roberta young |
| RYA | RDF y and Accumulo |
| RYAD | Riyadh |
| RYAN | Regenerate Your Authentic Nature |
| RYAN | Rendering Your Animation Nonlinearly |
| RYAN | Responding To Young Athenians Needs |
| RYB | Red Yellow and Blue |
| RYB | redyellowblue |
| RYB | red–yellow–blue |
| RYB | Ride Your Bike |
| RYB | Rock Your Baby |
| RYC | Reclaim Your City |