| Acronym | Definition |
|---|
| LSSP➣Lanka Sama Samaja Party (Sri Lanka) |
| LSSP➣Life-Cycle Signature Support Plan (US DoD) |
| LSSP➣Launch Site Support Plan |
| LSSP➣Launch Site Safety Plan |
| LSSP➣Licenced Specialist in School Psychology (National Association of School Psychologists) |
| LSSP➣List of Social Situation Problems (psychometric testing) |
| LSSP➣Learning Skills Support Program (Mississippi State University) |