Cognomen Плачек (Placzek 
, Плачек 
) , all around the world, is quite a rare family name. The surname Плачек is habitual in Poland, where it is quite a rare surname, Germany, and Czechia, where it is a rare surname. Measured by absolute frequency, this name is the most popular in Germany, Poland, and the United States. More frequently, Плачек is the forename as well as the last name.