In the entire world, Дак (Дак 
, Dacus 
) is a very rare principally masculine, but very infrequently female forename. The given name Дак is characteristic of the United States, where it is an extremely rare principally boy's, but very infrequently girly name, and China, where it is an extremely rare boy's name. More frequently, Дак is the last name as well as the forename.