Family name Kyungja (Kyungja 
) , across the world, is a rare cognomen. The cognomen Kyungja is habitual in South Korea, where it is a rare surname, Canada, where it is an extremely rare surname, and China. More frequently, Kyungja is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Kyungja | Canada, United States, South Korea, Malaysia, China |