| 11. | ELPRO | Electronic Public Procurement System for Europe (4º Programa Marco de I+D) |
| 12. | EM | Eurométodo |
| 13. | EMPMB | EuroMethod Programme Management Board. |
| 14. | EN | Norma Europea |
| 15. | ENS | European Nervous System |
| 16. | ENV | Norma Previa Europea |
| 17. | EPHOS | European Procurement Handbook for Open Systems |
| 18. | ESI | European Software Institute |
| 19. | ESPRIT | European Strategic Programme for Research and development in Information Technologies |
| 20. | ESTROFA | ESpecificaciones para el TRatamientO de Flujos Administrativos Automatizados |