All around the world, Gillieron (Gillieron 
) is a very rare epicene given name. The first name Gillieron is habitual in Western Europe, particularly Switzerland, where it is a rare unisex name. More prevalently, Gillieron is the last name as well as the forename.
Mr, Sonia, Steve, Alain, Andre, Ariel, Chico, Carly, Brice, Karen, Kevin, Peter, David, Louis, Naomi, Emile, Helen, Oscar, Marcos, Maxime, Michel, Sandra, Serge, Susana, Saida, Mabel, Ms, Sue, Luc, Tom, Tim, Marc, Aida, Aude, Paul, Rita, Lair, Luis, Luiz, Léa, Joel, Eric, Iris, Ivan, Yves, Maria, Manon, Sarah, and Sergio