Globally, Guerain (Guerain 
) is an extremely rare unknown gender first name. Much more frequently, Guerain is the last name as well as the forename.
Mr, Magalie, Mélina, Andreas, Antoine, Anthony, Brendan, Patrick, Patrice, Pauline, Lisette, Nicolas, Edouard, Valerie, Francis, Florine, Olivier, Matthieu, Samantha, Stephane, Aurelien, Charline, Mathieu, Yohann, Fabien, Fannie, Remi, Ruud, John, Jean, Fred, Manon, Andre, Andie, Anouk, Cathy, Berenger, Celia, David, Ebony, Marina, Steven, Pascal, Pierre, Dennis, Daniel, Thomas, Emilie, Bruno, and Philippe