Surname Demikis (Demikis 
) , in the entire world, is a very rare last name. The family name Demikis is characteristic of Lithuania, where it is quite a rare surname, Germany, where it is an extremely rare surname, and the United Kingdom. Measured by absolute frequency, it most frequently occurs in Lithuania, the United States, and Germany.
| VARIANT | COUNTRY |
|---|---|
| Demikis | Germany, Lithuania, United Kingdom, United States, Brazil |
| juozas demikis LT (b. 1876) |
|