Surname Ciosu (Ciosu 
) , in the entire world, is a rare cognomen. The last name Ciosu is characteristic of Romania, where it is a rare surname, Italy, where it is a very rare surname, and the United Kingdom, where it is an extremely rare surname. Much less frequently, Ciosu is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Ciosu | Romania, United Kingdom, Italy |
| emilia ciosu Romanian female table tennis player, RO (b. 1971) |
|