| Acronym | Definition |
|---|
| LSSO➣Legal Sales and Service Organization |
| LSSO➣Leicestershire Schools Symphony Orchestra (youth orchestra; UK) |
| LSSO➣London Schools Symphony Orchestra (London, UK) |
| LSSO➣Laser System Safety Officer |
| LSSO➣Logistics Systems Support Office |
| LSSO➣Litton Amecon Space System Operations |