Family name Jjohn (Jjohn 
) , around the world, is a very rare surname. The family name Jjohn is habitual in Nigeria, where it is a very rare surname, Colombia, and Malaysia, where it is an extremely rare surname. In absolute terms, it is the most numerous in Nigeria, China, and Colombia. More prevalently, Jjohn is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Jjohn | United Kingdom, India, United States, Nigeria, China |