Cognomen Laczak (Laczak 
) , in the entire world, is a rare surname. The last name Laczak is characteristic of Poland, where it is a rare surname, France, where it is a very rare surname, and the United Kingdom, where it is an extremely rare surname. Measured by absolute frequency, it most frequently occurs in Poland, the United States, and France. More prevalently, Laczak is the forename as well as the last name.