| Acronym | Definition |
|---|
| ECIS | European Conference on Information Systems |
| ECIS | European Council of International Schools |
| ECIS | European Colloid and Interface Society (Italy) |
| ECIS | Eindhoven Centre for Innovation Studies (Eindhoven, Netherlands) |
| ECIS | European Committee for Interoperable Systems |
| ECIS | Eighteenth Century Ireland Society (est. 1986; Ireland) |
| ECIS | Electric Cell-substrate Impedance Sensing (mammalian cell monitoring; trademark of Applied BioPhysics) |
| ECIS | Education Center for International Students (Nagoya University; Japan) |
| ECIS | Education Center for IBM Software |
| ECIS | Email Cancer Information Specialist (American Cancer Society) |
| ECIS | European Carbon Investors and Services |
| ECIS | European Communities Information Service |
| ECIS | Endometrial Carcinoma In-Situ |