MSEI
| Acronym | Definition |
|---|---|
| MSEI | Multidimensional Self-Esteem Inventory |
| MSEI | Merseyside Social Enterprise Initiative (UK) |
| MSEI | Mercy Secondary Education Inc. (Alphington, Victoria, Australia) |
| MSEI | Malta Stock Exchange Index (finance) |
| MSEI | Multiple Spin-Echo Imaging (magnetic resonance imaging) |
| MSEI | Modified Self-Esteem Inventory (psychology) |