| Acronym | Sense | Language | Topics |
|---|---|---|---|
| ISE | Internacia Semajnfino Esperantista | In Esperanto | → Congresses → Artificial languages (linguistics) |
| ISE | Institut Syndical Européen | In French | → Organizations and associations → Labour, labour economics |
| ISE | Istituto per lo Studio degli Ecosistemi | In Italian | → Threats to the environment |
| ISE | Iniziative Sviluppo Energie | In Italian | → Energy economics → Electrical engineering |