Cognomen Кьяра (Chiara 
, Kiara 
, Kyara ) , in the entire world, is a common last name. The cognomen Кьяра is habitual in Italy, where it is quite a common surname, Tanzania, where it is quite a rare surname, and Peru. In absolute terms, it is the most numerous in Italy, Tanzania, and Kenya. More frequently, Кьяра is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Chiara | Indonesia, Italy, Australia, United States, Brazil |
| Kyara, Kiara | Indonesia, Italy, United States, Tanzania, Brazil |
| Кьяра | Russia, Ukraine |