Cognomen Janlia (Janlia 
) , around the globe, is an extremely rare last name. The surname Janlia is habitual in Latin America and the Caribbean, particularly Venezuela, where it is an extremely rare surname. Much more frequently, Janlia is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Janlia | Democratic Republic of the Congo, United States, India, Brazil, Venezuela |