In the entire world, Ziak (Ziak 
) is an extremely rare boy's forename. Much more prevalently, Ziak is the last name as well as the forename.
Mr, Marek, Mandy, Matej, Milan, Alina, Anton, Artur, Craig, Betty, Marie, Brian, Patti, Pavel, Pavol, Peter, Roman, Rokok, David, Donna, Gregg, Bryan, Larry, Maria, Eric, Rex, Jan, Ewa, Mary, Matt, Mike, Sumi, Anna, Anne, Eron, Kara, Ruth, Dori, Gary, Jaro, John, Joao, Jean, Todd, Neil, Paul, and Linda