Family name Jarnia (Jarnia 
) , all over the world, is a very rare last name. The cognomen Jarnia is habitual in Myanmar, where it is a very rare surname, the United States, where it is an extremely rare surname, and India. Also, Jarnia is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Jarnia | Indonesia, Philippines, India, Myanmar, New Zealand |