Surname Gaicu (Gaicu 
) , in all the world, is a rare cognomen. The surname Gaicu is habitual in Romania, where it is quite a rare surname, and the United States, where it is an extremely rare surname. Much less frequently, Gaicu is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Gaicu | Romania, United Kingdom, United States |