Last name Zylak (Zylak 
) , across the world, is a rare family name. The cognomen Zylak is habitual in Poland, where it is a rare surname, Canada, where it is a very rare surname, and Australia. Not in comparison with a country's population, it is the most numerous in Poland, the United States, and Canada. More prevalently, Zylak is the forename as well as the last name.