| Abbreviation | Definition |
|---|---|
| RYT | Run, Yell, Tell |
| RYU | Revolutionary Youth Union |
| RZO | Rochester Zoning Ordnance |
| S | Seclusion |
| S | Sentence |
| S | Specific |
| S | Stab |
| S | Stalker |
| S | Stiff |
| SA | Side Arm |
| SA | Single Action |
| SA | Special Agent |
| SAA | Statewide Technical Architecture |
| SACO | Substance Abuse Control Officer |
| SAD | Stoned And Drugged |
| SAD | Summons Alert Days |
| SADD | Students Against Dangerous Decisions |
| SADO | State Appellate Defender Office |
| SAEEA | School Access to Emergency Epinephrine Act |
| SAF | Special Assault Force |