OSY
| Acronym | Definition |
|---|---|
| OSY | Out-of-School Youth (various locations) |
| OSY | Offshore Switch Yard |
| OSY | Ounces Per Square Yard (fabric weight) |
| OSY | Optimum Sustainable Yield (fisheries) |
| OSY | Out-of-School Youth Program (Department of Youth & Community Development; New York, NY) |
| OSY | Oshima Shipyard (Oshima Shipbuilding Co., Ltd.; Japan) |