Surname Estoni (Estoni 
) , throughout the world, is a very rare family name. The cognomen Estoni is characteristic of Tanzania, where it is a very rare surname, Yemen, and Georgia. Measured by absolute frequency, this name is the most popular in Tanzania, Yemen, and Brazil. Also, Estoni is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Estoni | Brazil, Yemen, Tanzania, France, India |