Surname Дику (Dicu 
, Дику 
) , around the world, is quite a common cognomen. The family name Дику is characteristic of Romania, where it is quite a common surname, Italy, where it is a rare surname, and Greece. Not in comparison with a country's population, the name is most common in Romania, Italy, and Spain. Much less frequently, Дику is the forename as well as the last name.