| Short Code | Full Form |
|---|---|
| OC full form | Occupancy Certificate | Original Content | Open Catagory |
| OCP full form | Oral Contraceptive Pill | Open Circuit Potential |
| OD full form | Over Dose / Over Draft |
| ODC full form | Optical Disc Corporation |
| ODF full form | Open Defecation Free |
| ODL full form | Open and Distance Learning | Optical Data Link | Overlay Description Language |
| ODS full form | Operational Data Store |
| OFC full form | Optical Fiber Cable | Offsite Facilitation Center | Of Course |
| OG full form | Original Gangster |
| OHP full form | Occupational Health Psychology |
| OIC full form | Organisation of Islamic Cooperation |
| OK full form | Olla Kalla | Oll Korrect | ACCEPTED | APPROVED |
| OLA full form | Operational Level Agreement | Office of Legal Affairs |
| OLX full form | On Line eXchange |
| OMC full form | Odisha Mining Corporation | Ocean Medical Center | Occupational Measurement Center |
| OMG full form | Ocular Myasthenia Gravis | Oh My God |
| OMR full form | Optical Mark Recognition |
| OMS full form | Order Management System |
| OCD full form | Obsessive-Compulsive Disorder |
| OP full form | Over Powered / Original Poster |
| OOO full form | Out Of Office / Out of Order |
| OCR full form | Optical Character Recognition |
| ONGC full form | Oil and Natural Gas Corporation |
| OPD full form | Outpatient Department |
| OOPS full form | Object-Oriented Programming System |
| OOTD full form | Outfit Of The Day |
| OPEC full form | Organization of Petroleum Exporting Countries |
| OPG full form | Orthopantomagram |
| ORG full form | Organization / Generic top-level domain |
| ORM full form | Object–Relational Mapping |
| ORVM full form | Outside Rear View Mirror |
| OS full form | Operating System |
| OSM full form | Open Street Map |
| OSS full form | operational support system |
| OST full form | Original Soundtrack | Offline Storage Table | On Shore Technology |
| OTA full form | Officers Training Academy |
| OTP full form | One-Time Password |
| OSA full form | Obstructive Sleep Apnea |
| OEM full form | Original Equipment Manufacturer |
| OECD full form | Organization for Economic Co-operation and Development |
| OTD full form | On This Day | On The Dot | Operational Test Director |
| OTG full form | On The Go | OVEN TOAST GRILL |
| OTS full form | Office of Thrift Supervision |
| OTT full form | Over The Top | Content Streamed Over The Internet |
| OVD full form | Officially Valid Document |
| OYO full form | On Your Own |
| OPGW full form | Optical Ground Wire | Overhead Power Ground Wire |
