Family name Iak (Iak 
) , in the world, is a rare last name. The last name Iak is characteristic of Poland, where it is a rare surname, Malaysia, where it is a very rare surname, and Indonesia. Measured by absolute frequency, it most frequently occurs in Poland, Indonesia, and Brazil. Much less frequently, Iak is the forename as well as the last name.
Ma, Lois, Jany, Jose, Joao, Jeff, Jiã, Erik, Ivan, Igor, Maria, Marek, Matej, Matã, Moara, Milan, Anton, Clém, Boris, Paulo, Pavel, Pavol, Gary, Peter, Duã, Rosa, Mr, Ms, Tj, Mã, Ana, Amr, Kai, Kub, Rio, Dã, Jan, Jã, Oom, Zod, Miro, Soso, Alex, Abel, Adam, Koub, Petr, Davi, and Pedro