| Egmont Polska |
| - publisher of children publications. |
| Ekoservice |
| - plumbing. |
| Energopomiar |
| - power research and testing company in Gliwice. |
| ERA GSM |
| - telecommunications. |
| EUnet in Poland |
| - Polish office of this internet service provider. |
| euro color Ltd. |
| - photography and telecommunciations. |
| Eurostart |
| - provides database searches on Polish companies. |