MLSS
| Acronym | Definition |
|---|---|
| MLSS | Mixed Liquor Suspended Solids (environmental waste) |
| MLSS | Mario and Luigi: Superstar Saga (game) |
| MLSS | Machine Learning Summer School (various locations) |
| MLSS | Ministry of Labor and Social Security (China) |
| MLSS | Maximal Lactate Steady State |
| MLSS | Member of Lower Subordinate Staff |
| MLSS | Multilevel Secure Server |
| MLSS | Multiple Level Security System |
| MLSS | Mid-Louisiana Surgical Specialists (weight loss surgery clinic) |