Family name Alethéia (Alethéia 
) , across the world, is an extremely rare cognomen. The cognomen Alethéia is habitual in Latin America and the Caribbean, particularly Brazil, where it is an extremely rare surname. More prevalently, Alethéia is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Alethéia | Brazil |