| Acronym | Definition |
|---|
| OBL | Osama Bin Laden (international terrorism sponsor) |
| OBL | Online Burma/Myanmar Library |
| OBL | Oblast (Russian, province; used in postal addresses) |
| OBL | Obligated |
| OBL | Open Business License |
| OBL | Outbound Link |
| OBL | Object Listing |
| OBL | Oil Basins Limited (Australia) |
| OBL | Ocean Bill of Lading |
| OBL | Original Bill Lawrence (guitars) |
| OBL | Ohio Bankers League (combined Ohio Bankers Association and Ohio League of Financial Institutions) |
| OBL | Old Blinking Light (Taos, NM restaurant) |
| OBL | Outbound Link (Internet browsing) |
| OBL | Office of Business Liaison |
| OBL | Opaque Bubble Layer (Laser-Assisted Stromal In-Situ Keratomileusis complication) |
| OBL | Open Border Lobby |
| OBL | Orthopaedic Biomechanics Laboratory (Michigan State University) |
| OBL | Opérateur Boucle Locale (French: Local Loop Operator) |
| OBL | Ocala Business Leaders |
| OBL | Oficial Blog LaLiamos (Spanish: LaLiamos Official Blog; web design company blog) |
| OBL | Optimum Biometric Labs (Karlskrona, Sweden) |
| OBL | Operation Babylift (Vietnam) |
| OBL | One Big Love (band) |
| OBL | Output Buffer Logic (Cisco) |
| OBL | Operating Budget Ledger |
| OBL | Outside Battery Limits (scope of contract) |
| OBL | Out Bound Learning |
| OBL | Optical Break Lock (missiles, object being observed or tracked leaves the field-of-view of the tracking system) |
| OBL | On Board Leader (Delta Airlines Flight Attendant in Charge) |
| OBL | Orthodoxy Beyond Limits |
| OBL | Oregon BRDF Library |
| OBL | Own Brand Labeler |
| OBL | Orange Ball League |
| OBL | Ontario Boating League (Penetanguishene, ON, Canada) |
| OBL | Origin Bill of Lading |