OSCO
| Acronym | Definition |
|---|---|
| OSCO | Oklahoma Scholastic Chess Organization |
| OSCO | Old South Community Organization (Canada) |
| OSCO | Organized and Serious Crimes Ordinance (Hong Kong) |
| OSCO | Order of Cistercians of the Strict Observance (religious order) |
| OSCO | Online Stochastic Combinatorial Optimization |
| OSCO | Omaha Symphony Chamber Orchestra (Omaha, NE) |
| OSCO | Ocean State Chamber Orchestra (Rhode Island) |
| OSCO | One Stop Center Operations (Department of Employment Services; Washington, DC) |