Cognomen Janoario (Janoario 
) , throughout the world, is a rare last name. The surname Janoario is characteristic of Latin America and the Caribbean, particularly Brazil, where it is a rare surname, and Argentina, where it is an extremely rare surname. Likewise, Janoario is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Janoario | Brazil, Argentina |