Family name Grigoriciuc (Grigoriciuc 
) , worldwide, is a rare last name. The cognomen Grigoriciuc 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. Measured by absolute frequency, this name is the most popular in Romania, Italy, and the United States. Much less frequently, Grigoriciuc is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Grigoriciuc | Romania, United States, United Kingdom, Italy |