HMSL
| Acronym | Definition |
|---|---|
| HMSL | Hierarchical Music Specification Language (musical programming language; est. 1980) |
| HMSL | Height above Mean Sea Level |
| HMSL | Honda Motorcycles and Scooters Ltd. (India) |
| HMSL | Hero Management Service Limited (Haryana, India) |
| HMSL | Hydrazine Mustard Spin Label |
| HMSL | (Center) High Mounted Stop Lamp (vehicle equipment) |