KCSO
| Acronym | Definition |
|---|---|
| KCSO | King County Sherriff's Office (Seattle, WA) |
| KCSO | Knox County Sheriffs Office |
| KCSO | Klickitat County Sheriff's Office (Goldendale, WA) |
| KCSO | Kaohsiung City Symphony Orchestra (est. 1981; Taiwan) |
| KCSO | Kern County Sheriff's Office |