| Acronym | Sense | Language | Topics |
|---|---|---|---|
| SMI | Stefan Meyer Instituts für subatomare Physik | In German | → Nuclear, atomic, and molecular physics |
| SMI | Sisters of Mary Immaculate | In English | → Roman catholic church |
| SMI | Structure Militaire d'Intégration | In French | → Military affairs |
| SMI | Student Medical Insurance | In English | → Insurance → Medicine → Higher education, universities |