Cognomen Jantoro (Jantoro 
) , in the entire world, is a rare family name. The last name Jantoro is habitual in Indonesia, where it is a rare surname, Brazil, where it is an extremely rare surname, and the United States. Much less frequently, Jantoro is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Jantoro | United States, Brazil, Indonesia |