Surname Сердар (Serdar 
, Сердар 
) , around the world, is a common cognomen. The surname Сердар is characteristic of Turkmenistan, where it is quite a common surname, Croatia, and Turkey. Not in comparison with a country's population, this name is the most popular in Turkey, Turkmenistan, and Serbia. More frequently, Сердар is the forename as well as the last name.