Last name מאדוק (Madoc 
, Maddock 
, מאדוק 
) , in the world, is quite a common surname. The cognomen מאדוק is characteristic of Australia, where it is quite a rare surname, the United Kingdom, and Ireland. Measured by absolute frequency, this name is the most popular in the United Kingdom, the United States, and Australia. Very seldom, מאדוק is the forename as well as the last name.