| Abbreviation | Definition |
|---|---|
| LORD | Loyal Order of the Ruptured Duck |
| LORO | Lobe-on-Receive Only |
| LOROP | Long Range Oblique Photography |
| LOS | length of service |
| LOS | Length of Service (usually military/naval) |
| LOS | Line Of Sight |
| LOSAT | Line Of Sight Anti-Tank |
| LOS-AT | Line of Sight-Antitank |
| LOSC | Line-Of-Sight Calculator |
| LOSD | Line-of-Sight Difference |
| LOS-F-H | Line Of Sight-Forward-Heavy |
| LOSIM | Low Observable Simulation |
| LOS-R | Line Of Sight-Rear |
| LOST | Legion Of Sharshank Troops |
| LOSV | Line Of Sight Vietnam |
| LOT | Left On Top |
| LOT | Limited Operational Test |
| LOTAWS | Laser Obstacle/Terrain Avoidance Warning System |
| LOTB | Land Operations Temperate Boots |
| LOTO | Lock Out, Tag Out |