OYO
| Acronym | Definition |
|---|---|
| OYO | On Your Own |
| OYO | Oakland Youth Orchestra (California) |
| OYO | Oklahoma Youth Orchestra (est. 1977) |
| OYO | Ombetja Yehinga Organisation (social awareness; Namibia) |
| OYO | Open Youth Organization |
| OYO | Ottawa YMCA/YWCA Olympians (swim team; Canada) |
| OYO | Oulun Yliopisto (Finnish, University of Oulu) |