All around the world, Grotto (Grotto 
, Grotta , Grupta 
) is a rare unisex first name. The first name Grotto is characteristic of Southern Europe, particularly Italy, where it is a rare unisex name. Much more prevalently, Grotto is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Grotta, Grotto | Brazil, France, Argentina, United States, Italy |
| Grupta | United States, India |