Globally, Diehle (Diehle 
) is an extremely rare unknown gender forename. Much more frequently, Diehle is the last name as well as the forename.
Mr, Michael, Andreas, Charles, Kirsten, Kristin, Reinout, Richard, Deborah, Douglas, Marilyn, Jessica, Heather, William, Courtney, Boonthai, Danielle, Lawrence, Jennifer, Natascha, Sebastian, Jürgen, Walter, Oliver, Hubert, Ms, Doug, Lisa, John, Hans, Carol, Colin, Kelly, Klaus, Devon, Joyce, Monika, Shanda, Selena, Stefan, Angela, Ashley, Rachel, Robert, Daniel, Nadine, Christian, and Elizabeth