| Acronym | Definition |
|---|
| OIC | Officer In Charge |
| OIC | Oh I See |
| OIC | Office of Independent Council |
| OIC | Opioid Induced Constipation |
| OIC | Organization of the Islamic Conference |
| OIC | Organization of Islamic Cooperation |
| OIC | Offer In Compromise |
| OIC | Organization for International Cooperation (various locations) |
| OIC | Office of the Insurance Commissioner (Washington) |
| OIC | Options Industry Council (Chicago, IL) |
| OIC | Office for Interoperability & Compatibility |
| OIC | Officer in Command |
| OIC | Opportunities Industrialization Center |
| OIC | Oman Insurance Co. |
| OIC | Oracle Incentive Compensation |
| OIC | Order in Council (Canada) |
| OIC | Oracle Instance Client |
| OIC | Only in Chain |
| OIC | Overcomers in Christ (ministry) |
| OIC | Opus International Consultants (various locations) |
| OIC | Orkney Islands Council |
| OIC | Oakland Ice Center (Oakland, CA) |
| OIC | Osaka Ibaraki Campus (Ritsumeikan University; Japan) |
| OIC | Open International Competition (procurement) |
| OIC | Organismo Italiano di Contabilità (Italian Accounting Committee) |
| OIC | Outpatient Infusion Center (healthcare) |
| OIC | Open Internet Coalition |
| OIC | Other Industrialized Countries |
| OIC | Ontology for the Intelligence Community |
| OIC | Open Indicators Consortium |
| OIC | Old Iron Company (est. 1978; Spencer, IA) |
| OIC | Old Icelandic (linguistics) |
| OIC | Oral Interpreting Certificate |
| OIC | Overseas Indian Citizen |
| OIC | Office of the Information Commissioner of Canada |
| OIC | Officemate International Corp |
| OIC | Online Internet Center |
| OIC | ORIX Investment Corporation (Japan) |
| OIC | Osteogenesis Imperfecta Congenita |
| OIC | Online Interactive Course (various schools) |
| OIC | Office of International Conferences |
| OIC | Oil Industry Commission |
| OIC | Oriental Insurance Corporation (India) |
| OIC | Orchid Identification Center (Marie Selby Botanical Gardens) |
| OIC | Oregon Institute of Cosmetology (Medford, OR) |
| OIC | Oil Importing Country |
| OIC | Office of Internal Communications |
| OIC | Orlando Immunology Center (Florida) |
| OIC | Opus International Communications, Inc |
| OIC | Office of Institutional Coordination |
| OIC | Opiate Induced Constipation |
| OIC | Optical Imaging Center |
| OIC | Organizational Identity Construction |
| OIC | Operational Issues and Criteria |
| OIC | FCC Office of International Communications |
| OIC | Orbital Imaging Corporation |
| OIC | Other Insurance Carrier (insurance) |
| OIC | Oslo International Church (Oslo, Norway) |
| OIC | Ottawa Interministerial Council (Canada) |
| OIC | Overissue Crew |
| OIC | Overseas Instruction in Counseling |
| OIC | Operator Instruction Chart |
| OIC | Order Isolation Control |