Around the globe, Gerlache (Gerlache 
) is an extremely rare unknown gender forename. Much more frequently, Gerlache is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Gerlache | Belgium, Spain, United States, Canada, France |
Mr, Stella, Sylvie, Alfred, André, Andrã, Adrien, Astrid, Axelle, Cassie, Claude, Pierre, Rachel, Romain, Robert, Gaetan, Nicole, Elodie, Emilie, Franck, Freddy, Mathieu, Sabine, Myriam, Muriel, Michel, Guy, Hã, Marc, Anne, Adã, Paul, Gary, Jean, Nath, Eric, Monique, Ines, Alain, Allie, Aurã, David, Johan, Ninon, Henri, Marion, Manuel, Maxime, Yves, and Michael