Family name קדוק (Kaduk 
, קדוק 
) , all over the world, is quite a rare cognomen. The last name קדוק is characteristic of Aruba, where it is quite a common surname, Slovakia, where it is quite a rare surname, and Germany, where it is a rare surname. Measured by absolute frequency, it is commonest in Germany, India, and Poland. Likewise, קדוק is the forename as well as the last name.