| OLS | Nogales, Arizona 
| Others |
| OLS | Occupational Life Skills
| Others |
| OLS | Off Line State
| Others |
| OLS | Off Line System
| Others |
| OLS | Office Liquidation Solutions
| Others |
| OLS | Office of Labor Standards
| Others |
| OLS | Office of Laboratory Services
| Others |
| OLS | Office of Legal Services
| Others |
| OLS | Office of Legislative Services
| Others |
| OLS | Office of Library
| Others |
| OLS | Office of Library Services
| Others |
| OLS | Oil And Lng Ships
| Others |
| OLS | Oil Level Sensor
| Others |
| OLS | Omniscient Location Service
| Others |
| OLS | On Line Service
| Others |
| OLS | On Line Shopping
| Others |
| OLS | On Line Short
| Others |
| OLS | On Line Solutions
| Others |
| OLS | On Line Storage
| Others |
| OLS | On Line Strategies
| Others |
| OLS | On Line Submission
| Others |
| OLS | on Line Subscription Service
| Others |
| OLS | On Line Support
| Others |
| OLS | On Line Survey
| Others |
| OLS | On-Line School
| Others |
| OLS | On-Line Solution
| Others |
| OLS | One Last Sin
| Others |
| OLS | One Leg Stand
| Others |
| OLS | Online Learning System
| Others |
| OLS | Online Library System
| Others |
| OLS | Online License Sales
| Others |
| OLS | Online Linguistic Support
| Others |
| OLS | Ontario Land Surveyor
| Others |
| OLS | Ontology Lookup Service
| Others |
| OLS | Oosterum Loudspeaker Systems
| Others |
| OLS | Open Learning Support
| Others |
| OLS | Open Linux Server
| Others |
| OLS | Open Location Services
| Others |
| OLS | Operation Life Saver
| Others |
| OLS | Operation Lifeline Sudan
| Others |
| OLS | Operational Level System
| Others |
| OLS | Operational Linescan System
| Others |
| OLS | Optical Landing System
| Others |
| OLS | Optical Line System
| Others |
| OLs | Optra Ls
| Others |
| OLS | Oracle Label Security
| Others |
| OLS | Ordinary Least Squares
| Others |
| OLS | Organizational Leadership And Supervi
| Others |
| OLS | Organizational Leadership And Supervision
| Others |
| OLS | Organizational Leadership Skills
| Others |
| OLS | Organizational Leadership Supervision
| Others |
| OLS | Originating Line Screening
| Others |
| OLS | Ottawa Linux Symposium
| Others |
| OLS | Our Lady of the Snows
| Others |
| OLS | Our Little Secret
| Others |
| OLS | Outdoor Living Skills
| Others |
| OLs | Outlander Ls
| Others |
| OLS | Outlaw Limited Street
| Others |
| OLS | Outrigger Lodging Services
| Others |