LESI
| Acronym | Definition |
|---|---|
| LESI | Licensing Executives Society International (est. 1965) |
| LESI | Lake Erie Shores and Islands (Ohio) |
| LESI | Licenciatura em Engenharia de Sistemas e Informática (Portugese) |
| LESI | Lake Erie Swimming, Inc. (Ohio) |
| LESI | Lumbar Epidural Steroid Injection (medical) |