| Abbreviation | Definition |
|---|---|
| OPS | One Piece Stick |
| OPS | One Point Sling |
| OPS | Optical Parking System |
| OPS | Orbit Pendant Speaker |
| OPS | Oscillating Propulsion System |
| OPS | Other Peoples' Stuff |
| OPS | Outboard Propulsion System |
| OPS2 | Official PlayStation 2 |
| OPSS | Other Products Self Service |
| OPV | OptiView Fiber |
| OPV | Over Print Varnish |
| ORC | On Roadside Cabinet |
| ORMD | Other Regulated Material Domestic |
| ORVM | Outside Rear View Mirror |
| OS | Original Special |
| OS/2 | Operating System/2 (IBM-Microsoft) |
| OS/360 | IBM 360 Operating System |
| OSB | Offset Spoke Bed |
| OSCIL | Oscillating |
| OSE | Operating Supplies and Equipment |