Family name كواك (Kwak 
, Quack 
, كواك 
) , all over the world, is quite a common last name. The surname كواك is habitual in Bahrain, where it is quite a rare surname, Netherlands, and Germany. Not in comparison with a country's population, it most frequently occurs in the United States, Germany, and Netherlands. Likewise, كواك is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Kwak | Poland, China, South Korea, United States, Germany |
| Quack | Netherlands, China, Canada, United States, Germany |
| كواك | Syria |