Surname Costa-Mello (Costa-Mello 
) , across the world, is an extremely rare last name. The last name Costa-Mello is habitual in Northern America, particularly the United States, where it is an extremely rare surname. Parts of the name also exists independently as a last name Costa, and a last name Mello.
| VARIANT | COUNTRY |
|---|---|
| Costa-Mello | United States |