In all the world, Haysler (Haysler 
) is an extremely rare masculine given name. Much more prevalently, Haysler is the last name as well as the forename.
Mr, Pennie, George, Joseph, Nicole, Edward, Evelyn, Wesley, Marlene, Stephen, Pamela, Cecilia, Richard, Timothy, Eduardo, Eugenio, Heather, Samantha, Benedict, Jennifer, Exequiel, Kenneth, Stephanie, Brenda, Susana, Ms, Ed, Amy, Ben, Sara, Alex, Lois, Tony, Nina, Stacey, Susan, Becky, David, Jason, Trina, Tyler, Elian, Erico, Miriam, Mirian, Chris, and Anastasia