Family name Онофреи (Onofrei 
, Онофреи 
) , in the world, is quite a common cognomen. The family name Онофреи is characteristic of Romania, where it is quite a common surname, Moldova, and Ireland, where it is a rare surname. In absolute terms, it most frequently occurs in Romania, Moldova, and Italy. Much less frequently, Онофреи is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Onofrei | Romania, Italy, Spain, Moldova, United States |
| Онофреи | Russia |