Cognomen Chungdak (Chungdak 
) , throughout the world, is a very rare family name. The family name Chungdak is habitual in the United States, where it is an extremely rare surname, and India. More frequently, Chungdak is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Chungdak | United States, India |