| Name: | Estonianium |
| Symbol: | Es |
| Atomic weight: | 1 |
Estonianium is a chemical element listed on the Table of Elements. It is a member of the Transonic series. (TNG: "Rascals")
- The element Estonianium had the symbol "Es" which is the same atomic symbol used for Einsteinium. It is presumably named after the country of Estonia.