| Acronym | Definition |
|---|
| MASE | Math and Science Education (various locations) |
| MASE | Master of Arts in Special Education (degree) |
| MASE | Micro-Architectural Simulation Environment (computing) |
| MASE | Master Accredited Systems Engineer |
| MASE | Member of the American Society of Embalmers |
| MASE | Microwave-Assisted Solvent Extraction |
| MASE | Message Administration Service Element |
| MASE | Multi-Aegis Site Emulator (flight plan data processing; NATO Programming Centre) |
| MASE | Mississippi Alliance of State Employees |
| MASE | Multi-Axis Seat Ejection |
| MASE | Maximum Average Spectral Efficiency |
| MASE | Mission Analysis and System Engineering |
| MASE | Modified Aft Signal Ejector (US 637/640 Class submarine) |