| Acronym | Definition |
|---|
| SMSP | Switching Mode Power Supply |
| SMSP | Social Media Security Professional (certification) |
| SMSP | System Manager and Super Process |
| SMSP | Storage Management Services Protocol |
| SMSP | Société Minière du Sud Pacifique SA (French: South Pacific Mining Company; New Caledonia) |
| SMSP | Sony Music Special Products |
| SMSP | Single Member Simple Plurality (electoral system) |
| SMSP | Soil Moisture Strength Prediction (model) |
| SMSP | Small and Mid Market Solutions and Partners (Microsoft) |
| SMSP | St Mary's & St Peter's (UK school) |
| SMSP | System Manager Show Processes (ASAS-AS) |
| SMSP | Shuttle-Mir Science Project |
| SMSP | Stock Market Share Price |
| SMSP | Stadulis Motor Sports Products |
| SMSP | St. Mary Student Parish (Ann Arbor, MI) |