| Abbreviation | Definition |
|---|---|
| SMPV | Specially Marked Police Vehicle |
| SMT | Scars, Marks, and Tattoos |
| SNEN | Single Non-Emergency Number |
| SNEU | Street Narcotics Enforcement Unit |
| SNI | Safe Neighborhood Initiative |
| SNOP | Syndicat National des Officiers de Police |
| SNPB | Swedish National Police Board |
| SO | Sex Offender |
| SO10 | Special Operations group 10 (Crime Operations Group) |
| SO11 | Special Operations group 11 (Directorate of Intelligence) |
| SO12 | Special Operations Group 12 (Special Branch) |
| SO13 | Special Operations Group 13 (Anti-Terrorist Branch) |
| SO14 | Special Operations Group 14 (Royalty Protection Group) |
| SO16 | Special Operations Group 16 (Diplomatic Protection Group |
| SO17 | Special Operations Group 17 (Palace of Westminster) |
| SO19 | Special Operations Group 19 (Specialist Firearms Unit) |
| SO2 | Special Operations Group 2 (Fingerprint Bureau) |
| SO3 | Special Operations Group 3 (Directorate of Forensic Services) |
| SO4 | Special Operations Group 4 (National Identification Service) |
| SO5 | Special Operations Group 5 (Child Protection Unit) |