Surname Janagan (Janagan 
) , around the world, is a rare cognomen. The family name Janagan is characteristic of Sri Lanka, where it is quite a rare surname, Malaysia, where it is a very rare surname, and Indonesia. In absolute terms, the name is most common in Sri Lanka, India, and Indonesia. Likewise, Janagan is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Janagan | United Kingdom, India, Indonesia, Sri Lanka, Malaysia |