| Acronym | Definition |
|---|
| OIS➣Office Information System(s) |
| OIS➣Original Inner Sleeve (vinyl records) |
| OIS➣Optical Image Stabilizer (digital cameras) |
| OIS➣Ophthalmic Imaging System (software) |
| OIS➣Office of International Services (various schools) |
| OIS➣Operational Information System (various organizations) |
| OIS➣Online Information Service |
| OIS➣Optical Image Stabilizer |
| OIS➣Office Information System |
| OIS➣Object Oriented Input System |
| OIS➣Officer Involved Shooting |
| OIS➣Office of Information Services (University of Puget Sound) |
| OIS➣Overnight Index Swap |
| OIS➣Oil States International Inc (stock symbol) |
| OIS➣Ontario Interpreting Services (est. 1981; Ontario, Canada) |
| OIS➣Okinawa International School (Japan) |
| OIS➣Optimal Integrated Solutions (Carlsbad, CA) |
| OIS➣Office of Information Systems |
| OIS➣Office of Information Security |
| OIS➣Optimal Information Size |
| OIS➣Objective Interface Systems, Inc. (Herndon, VA) |
| OIS➣Oxygen Isotope Stage (paleoclimatology) |
| OIS➣Officer Indoctrination School (US Naval Education and Training Center) |
| OIS➣Offer Information Statement (Australian Securities and Investments Commission) |
| OIS➣Oh I See |
| OIS➣Office of Instructional Support (various locations) |
| OIS➣Organization for Internet Safety |
| OIS➣Oncology Information System |
| OIS➣Object-Oriented Input System |
| OIS➣Operation Identification Sheet (EU) |
| OIS➣Oregon Intervention System (Oregon Department of Human Services) |
| OIS➣Online Information System (Impress Software) |
| OIS➣Oxford International School |
| OIS➣Objective Instrumentation System (US Army Live Training Transformation) |
| OIS➣Orinda Intermediate School (Orinda, CA) |
| OIS➣Online Information Services (Impress Software) |
| OIS➣Open Interface Specification |
| OIS➣Ontologizing Industrial Standards (workshop) |
| OIS➣Okasan Information Systems Co., Ltd (Japan) |
| OIS➣Organization for Internet Security |
| OIS➣Obstruction Identification Surface |
| OIS➣Ocular Ischemic Syndrome |
| OIS➣Operational Intercommunication System |
| OIS➣OGE Input Simulator |
| OIS➣Osteopathic Information Service |
| OIS➣Organization of Indigenous People in Suriname |
| OIS➣Office of Internal Security |
| OIS➣Offshore Internet Services Limited (St Helier, New Jersey) |
| OIS➣OSHA Information System |
| OIS➣Orchard Information Systems (UK) |
| OIS➣Orbit Improvement System |
| OIS➣Office of Infrastructure Services (Kentucky) |
| OIS➣Oilfield Inspection Services, LLC (Non-destructive testing company, Alberta, Canada) |
| OIS➣Overbeek Information Security B.V. |
| OIS➣Overflow Internet Services (Gold Coast, Australia) |
| OIS➣Ordnance Initiation System |
| OIS➣Ordnance Information Sysyen (US Navy) |
| OIS➣Open Interface Server |
| OIS➣Ohio Innovation Summit |
| OIS➣Operator Identification System (AT&T) |