Cognomen Lidaks (Lidaks 
) , in the world, is a rare surname. The last name Lidaks is habitual in Northern Europe, particularly Latvia, where it is quite a rare surname, Lithuania, where it is a rare surname, and the United Kingdom, where it is an extremely rare surname. Not in comparison with a country's population, it is the most numerous in Latvia, Lithuania, and Brazil. Much less frequently, Lidaks is the forename as well as the last name.