Across the world, Gießler (Gießler 
) is an extremely rare unknown gender forename. Much more frequently, Gießler is the last name as well as the forename.
Amy, Elke, Eric, Emil, Hans, Hugo, Olaf, Otto, Mario, Marco, Mirko, Silke, Simon, Sonia, Sonja, Anita, Artur, Conny, Bernd, Bruno, Karin, Katja, Elia, Nick, Nico, Toni, Kai, Kim, Lea, Tom, Eva, Ina, Ute, Uwe, Karl, Kurt, Klaus, Paul, Dana, Dirk, Gaby, Gerd, Lina, Lutz, Jana, John, Jens, Juri, Ralf, and Klara