All over the world, Rolby (Rolby 
) is a rare male forename. The first name Rolby is characteristic of Cuba, where it is quite a rare male name, and the Democratic Republic of the Congo, where it is a rare boy's name. Much less frequently, Rolby is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Rolby | Mexico, Honduras, United States, Cuba, Democratic Republic of the Congo |