Surname Gusanu (Gusanu 
) , in all the world, is a rare cognomen. The last name Gusanu is habitual in Moldova, where it is quite a rare surname, Romania, where it is a rare surname, and Nigeria. Also, Gusanu is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Gusanu | Portugal, Romania, Italy, Moldova, Nigeria |