Last name Janario (Janario 
) , in the world, is a rare cognomen. The cognomen Janario is characteristic of Philippines, where it is a rare surname, the United Kingdom, where it is an extremely rare surname, and Brazil. Measured by absolute frequency, this name is the most popular in Philippines, the United States, and Brazil. Much less frequently, Janario is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Janario | Brazil, Philippines, United Kingdom, United States, India |