| Acronym | Definition |
|---|
| LOS | Level Of Service |
| LOS | Line(s) of Supply |
| LOS | Law Of the Sea |
| LOS | Line Of Sight (0-30 Miles) |
| LOS | Length of Stay |
| LOS | Loss Of Signal |
| LOS | Lucas Oil Stadium (Indianapolis, IN) |
| LOS | Letter of Support (various organizations) |
| LOS | Loan Origination System |
| LOS | Length of Service |
| LOS | Linux Operating System |
| LOS | Leftover Salmon (band) |
| LOS | Line Of Scrimmage (American football) |
| LOS | Land of Smiles (Thailand) |
| LOS | Loss of Selectivity |
| LOS | Loan Origination Software (various organizations) |
| LOS | Local Oscillator Signal |
| LOS | Legion of Superheroes (comic) |
| LOS | Light of Sight |
| LOS | Line of Sight |
| LOS | Lindows Operating System |
| LOS | Lipooligosaccharide |
| LOS | Living Oceans Society (Canada) |
| LOS | League of the South |
| LOS | Loss Of Synchronization |
| LOS | Large offspring syndrome (cloning) |
| LOS | Line of Symmetry |
| LOS | Limits of Stability |
| LOS | Limit of Sensitivity |
| LOS | Lube Oil System |
| LOS | Library Outreach Service |
| LOS | Logical Services |
| LOS | Lease Operating Statement (various companies) |
| LOS | Line Out of Service (ITU-T) |
| LOS | Live Oak Society |
| LOS | Legion of Steel (gaming guild) |
| LOS | Loan Operating System |
| LOS | Lift-Off Simulator |
| LOS | Letter of Supply |
| LOS | Lines of Sponsorship (MLM) |
| LOS | Line Operational Simulation |
| LOS | Line-Oriented Simulation |
| LOS | Landelijk Oefenstof Systeem (Dutch) |
| LOS | Late-Old Structure (forestry) |
| LOS | Local Operating Station |
| LOS | Launcher Operation Station |
| LOS | Lock Off Stop |
| LOS | Lead Out Subassembly |
| LOS | Logistic Operation Streamline |
| LOS | Norwegian Centre for Research in Organization and Management |
| LOS | Logistics Outfitting System (US Navy) |
| LOS | Lagos, Nigeria - Murtala Muhammad (Airport Code) |