| Acronym | Sense | Language | Topics |
|---|---|---|---|
| SEL | Skolta Esperanto-Ligo | In Esperanto | → Organizations and associations → Artificial languages (linguistics) |
| SEL | Système d'Échange Local | In French | → Economics |
| SEL | Société d'Exercice Libéral | In French | → 334 |
| SEL | Systems Electronics Laboratory | In English | → Research institutes → Electronics |
| SEL | Systems Engineering Laboratories | In English | → Research institutes → Engineering, technology |