| Acronym | Definition |
|---|
| OSS➣Office of Strategic Services |
| OSS➣Open Source Software |
| OSS➣Open Sound System (Unix digital audio architecture) |
| OSS➣Operations Support System(s) |
| OSS➣Operatore Socio Sanitario |
| OSS➣Operating System Service |
| OSS➣Origin of the Solar System |
| OSS➣Office of Student Services |
| OSS➣Operations Support Squadron |
| OSS➣Out of School Suspension |
| OSS➣Ofte Stillede Spørgsmål (Danish: Frequently Asked Questions) |
| OSS➣Off Screen (cinematography) |
| OSS➣Open Source Shakespeare (website) |
| OSS➣Operational Support System |
| OSS➣Operational Support System (THREAT) |
| OSS➣Office SharePoint Server (Microsoft) |
| OSS➣Oh So Sweet |
| OSS➣One Stop Shopping |
| OSS➣Office Support Systems |
| OSS➣Operational Storage Support |
| OSS➣Operating System Services |
| OSS➣Office Sharepoint Services |
| OSS➣Other Shared Secret |
| OSS➣Open Systems Specialists |
| OSS➣Open Sound System |
| OSS➣Onboard Support Software |
| OSS➣Office Search System |
| OSS➣Operations Systems Support |
| OSS➣Open System Services |
| OSS➣Office Sharepoint Server |
| OSS➣Open Storage Solutions |
| OSS➣Open Source Storage |
| OSS➣on Site Service |
| OSS➣Operation Support System |
| OSS➣On Site Service(s) |
| OSS➣On-Site Support (various organizations) |
| OSS➣Open Source Society (software) |
| OSS➣Orthopaedic Surgery Specialists (various locations) |
| OSS➣Overhead Sign Structure (transportation; various locations) |
| OSS➣Office of Space Science |
| OSS➣Our Shared Shelf (book club) |
| OSS➣Ossetic (linguistics) |
| OSS➣Office of the Secretary of State |
| OSS➣Operations Support Services |
| OSS➣Operation Spartan Shield (US Army) |
| OSS➣Office of Special Services |
| OSS➣Overseas Scholarship Scheme (Petroleum Technology Development Fund) |
| OSS➣Old Submarine (US Navy) |
| OSS➣Operational Support Services |
| OSS➣Optical Steadyshot (image stabilization technology) |
| OSS➣Ottawa, Sandusky, Seneca (recycling; Ohio) |
| OSS➣Online Service System (SAP) |
| OSS➣Office Support System |
| OSS➣Official Statistics System (New Zealand) |
| OSS➣Online Subscription Service (various organizations) |
| OSS➣Open Standard Solutions (Japan) |
| OSS➣Outside Surface |
| OSS➣Outside Storage |
| OSS➣Online Shopping Survey (various organizations) |
| OSS➣Optional State Supplementation |
| OSS➣Operator Service System |
| OSS➣OnSite Solutions |
| OSS➣Off-Site Surveillance System (various organizations) |
| OSS➣Onsite Sewage System |
| OSS➣Old-Style Siamese (cats) |
| OSS➣Over-The-Shoulder Shot (video photograpy) |
| OSS➣Object Storage Server |
| OSS➣Ontario Seniors Secretariat (Canada) |
| OSS➣OnDO SIP Server |
| OSS➣Officer Safety and Survival Training Program (US FEMA) |
| OSS➣Operational Sequencing System (US Navy) |
| OSS➣Occupy Sesame Street (satire) |
| OSS➣Online Search Service |
| OSS➣Open Sky System (Audi) |
| OSS➣Optical Storage System |
| OSS➣Optical Sight System |
| OSS➣Ogrenci Secme Sinavi (Turkish university exam) |
| OSS➣Observatory of the Sahara and the Sahel |
| OSS➣Oncology Support Services (cancer) |
| OSS➣Old School Soldiers |
| OSS➣Offerings for Service (computer services) |
| OSS➣Output Shaft Speed Sensor (automotive) |
| OSS➣Order of the Sacred Sword (gaming) |
| OSS➣Operational Storage Site |
| OSS➣Office of Space Station (NASA) |
| OSS➣Office of Statistical Standards |
| OSS➣Optical Surveillance System |
| OSS➣Ocean Surveillance System |
| OSS➣Open Simulation System |
| OSS➣Old Soft Shoe |
| OSS➣Output Sub System |
| OSS➣Off Site Sales |
| OSS➣Open System Solution |
| OSS➣Optics Support Structure |
| OSS➣Office of Space Systems |
| OSS➣Online Schedule System |
| OSS➣Advanced Broadband Operational Support Systems |
| OSS➣Overall System Sensitivity (radar) |
| OSS➣Object Service Standard (SEMI) |
| OSS➣Occupant Sensing System |
| OSS➣Over Speed Sensor (railroad industry) |
| OSS➣Optimizing SubSystem |
| OSS➣Operation Safer Streets (police task force) |
| OSS➣Objective Supply System |
| OSS➣Office of Systems Support |
| OSS➣On-Board Support Software |
| OSS➣Ordinary Strength Steel |
| OSS➣Oxenford State School (Gold Coast, Australia) |
| OSS➣Operational Support Summary |
| OSS➣Organizational Supply Support |
| OSS➣Ocean State Soccer School (North Kingstown, RI) |
| OSS➣Ormeau State School (Gold Coast, Australia) |
| OSS➣Oh Shoot Situation (polite form) |
| OSS➣Office of Special Security |
| OSS➣Oifig Schrúdóir na Scannán (Film Censor's Office, Ireland) |
| OSS➣Office for Special Support (academic support for students with special needs) |
| OSS➣Operator Seat Switch |
| OSS➣Operational Services Switch |
| OSS➣Overt Surveillance System |
| OSS➣Out-of-School Service (various locations) |