| Acronym | Definition |
|---|
| KSO | Kingsoft Office (Kingsoft Research) |
| KSO | Kentucky Symphony Orchestra (Covington, KY) |
| KSO | Kayseri Sanayi Odasi (Turkish: Kayseri Chamber of Industry) |
| KSO | Knoxville Symphony Orchestra |
| KSO | Kunstsecundair Onderwijs (Dutch) |
| KSO | Kensington Symphony Orchestra (London, England) |
| KSO | Key Security Official |
| KSO | Kyushu Symphony Orchestra (Japan) |
| KSO | Kishwaukee Symphony Orchestra (Dekalb, IL) |
| KSO | Karl-Schwarzschild-Observatorium |
| KSO | Keyboard Send Only |
| KSO | Korean Society of Oregon (Portland, OR) |
| KSO | Kent Schools Orchestra (Kent, UK) |
| KSO | Katholische Sozialakademie Österreichs |
| KSO | Key Sales Objective |