| Acronym | Definition |
|---|
| LSSA➣Lean Six Sigma Academy |
| LSSA➣Least-Squares Spectral Analysis (mathematics) |
| LSSA➣Legal Software Suppliers Association (UK) |
| LSSA➣Lone Star Shooting Association (Texas) |
| LSSA➣Lee's Summit Soccer Association (Lee's Summit, MO) |
| LSSA➣Linear Static Stress Analysis |
| LSSA➣Lutheran Social Services of Alaska |
| LSSA➣Logistics Systems Support Activity |
| LSSA➣Lancaster Select Soccer Association (Lancaster, OH) |
| LSSA➣Lithuanian Adult Education Association |
| LSSA➣Linear Solid-State Amplifier |
| LSSA➣Lower Shroud Subassembly |
| LSSA➣Logistics Systems Support Agency |