Family name Janaek (Janaek 
) , across the world, is a very rare cognomen. The last name Janaek is characteristic of Thailand, where it is a very rare surname, and India, where it is an extremely rare surname. More frequently, Janaek is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Janaek | Indonesia, India, Thailand |