Cognomen Сердан (Cerdan 
, Serdan , Сердан 
) , around the world, is a common family name. The family name Сердан is habitual in Peru, where it is quite a common surname, Argentina, where it is quite a rare surname, and Spain. In absolute terms, it is the most numerous in Peru, Philippines, and Argentina. Much less frequently, Сердан is the forename as well as the last name.