Worldwide, Kläy (Kläy 
) is an extremely rare unknown gender given name. Much more frequently, Kläy is the last name as well as the forename.
Ben, Stefan, Alfred, Amanda, Adrian, Roland, Dennis, Daniel, Danilo, Dieter, Thomas, Elodie, Fabien, Oliver, Walter, Manuela, Michael, Andreas, Barbara, Bettina, Dominic, Herbert, Silvia, Samuel, Michel, Markus, Pat, Urs, Andy, Beat, Kari, Rene, Reto, Ruth, Dave, Jack, Quentin, Jrène, Nina, Yves, Marco, Simon, Ruedi, Tanja, Heinz, Fritz, Yanis, Marcel, Tina, and Marianne