Globally, Klacko (Klacko 
) is an extremely rare unknown gender forename. Much more prevalently, Klacko is the last name as well as the forename.
Mr, Wendy, Yvann, Marian, Martin, Michal, Cheryl, Dennis, Daniel, Lauren, Luanne, Nicole, Viktor, Matthew, Phillip, Richard, Lindsay, William, Nancy, Tomas, Juraj, Jozef, Ann, Myra, Kajo, Paul, Leah, Jade, Jeff, Milan, Miroslav, Milos, Carla, Peter, Raduz, Debra, Deena, David, Janis, Jaime, Chuck, and Christian