Surname Wieclaw (Wieclaw 
) , around the world, is quite a rare family name. The surname Wieclaw is habitual in Poland, where it is quite a rare surname, Czechia, where it is a rare surname, and Australia, where it is a very rare surname. In absolute terms, it is commonest in Poland, the United States, and Germany. More prevalently, Wieclaw is the forename as well as the last name.