| OBS | Aubenas, France 
| Others |
| OBS | O Broadcasting System
| Others |
| OBS | Object Script
| Others |
| OBS | ObjectScripT Script FILE
| Others |
| OBS | Obliterative Bronchiolitis Syndrome
| Others |
| OBS | Observatory
| Others |
| OBS | OBServe
| Others |
| OBS | OBServer
| Others |
| OBS | OBSolete
| Others |
| OBS | obstetric service
| Others |
| OBS | obstruction
| Others |
| OBS | Obstructive Bowel Syndrome
| Others |
| OBS | Ocala Breeders' Sales Company
| Others |
| OBS | Ocean Baseline System
| Others |
| OBS | Ocean Bottom Seismometer
| Others |
| OBS | Office Based Surgery
| Others |
| OBS | Office of Board Services
| Others |
| OBS | Office of Business Services
| Others |
| OBS | Oil Bunker Surcharge
| Others |
| OBS | Oklahoma Bicycle Society
| Others |
| OBS | Old Bastard Soros
| Others |
| OBS | Old Body Style
| Others |
| OBS | Old Brandy Stunt
| Others |
| OBs | Oligoclonal Bands
| Others |
| OBS | Olympic Broadcasting Services
| Others |
| OBS | Olympus BioSystems
| Others |
| OBS | Omni Bearing Selector
| Others |
| OBS | On Board Software
| Others |
| OBS | On Board Switching
| Others |
| OBS | On Board System
| Others |
| OBS | One Beautiful Steed
| Others |
| OBS | Online Banking Services
| Others |
| OBS | Online Banking Solutions
| Others |
| OBS | Online Book Store
| Others |
| OBS | Online Business School
| Others |
| OBS | Open Bidding Service
| Others |
| OBS | Open Book Systems
| Others |
| OBS | Open broadcast software
| Others |
| OBS | Open Broadcaster Software
| Others |
| OBS | Open Broadcasting Software
| Others |
| OBS | Open Budget Survey
| Others |
| OBS | Open Build Service
| Others |
| OBS | OpenSuse Build Service
| Others |
| OBS | Operational Bioinstrumentation System
| Others |
| OBS | Operational Biomedical Sensor
| Others |
| OBS | Operational Biomedical System
| Others |
| OBS | Optical Back Scatter
| Others |
| OBS | Oracle Balance Scorecard
| Others |
| OBS | Oracle Bridging System
| Others |
| OBS | Orange Blossom Special
| Others |
| OBS | Orbiting Brown-dwarf Star
| Others |
| OBS | Orders of Battle System
| Others |
| OBS | Organic Brain Syndrome
| Others |
| OBS | Organisational Breakdown Structure
| Others |
| OBS | Organization Breakdown Structure
| Others |
| OBS | Organization for Black Struggle
| Others |
| OBS | Organization of Bengali Students
| Others |
| OBS | Organization of Black Screenwriters
| Others |
| OBS | Organizational Breakdown Structure
| Others |
| OBS | Oriental Blank Stare
| Others |
| OBS | Oriental Boy Soldiers
| Others |
| OBS | Oromia Broadcasting Service
| Others |
| OBS | OSIS (Ocean Surveillance Information System) Baseline System
| Others |
| OBS | Other Beastly Secrets
| Others |
| OBS | Others Before Self
| Others |
| OBS | Out Back Sport
| Others |
| OBS | Output Based Specification
| Others |
| OBS | Output Block Size
| Others |
| OBS | Output-Based Specification
| Others |
| OBS | Outward Bound Singapore
| Others |
| OBS | Overbrook School for the Blind
| Others |
| OBS | Owen Biddle Shorty
| Others |
| OBS | Road Obstruction
| Others |
| OBS | The Open Battle System
| Others |
| obs. | obstetric
| Others |