Family name Doec (Duk 
, Dook 
, Doek 
) , in all the world, is quite a rare cognomen. The surname Doec is habitual in Mongolia, where it is quite a rare surname, Croatia, and Netherlands. Not in comparison with a country's population, it is the most numerous in Poland, Netherlands, and China. Also, Doec is the forename as well as the last name.