Surname Jaok (Jaok 
) , in the world, is a very rare cognomen. The last name Jaok is habitual in Thailand, where it is a very rare surname, Malaysia, and Germany, where it is an extremely rare surname. More prevalently, Jaok is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Jaok | Germany, South Korea, Malaysia, Thailand, United States |