O/R
| Acronym | Definition |
|---|---|
| O/R | On Request |
| O/R | Other Ranks (various locations) |
| O/R | Outright (foreign exchange transactions) |
| O/R | Overrated |
| O/R | Operational Requirement |
| O/R | Optical Reader (band) |
| O/R | Originator/Recipient |
| O/R | Office Routing |
| O/R | Ofloxacin Plus Rifampin |