| 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) |