In the entire world, Urdiain (Urdiain 
) is an extremely rare unknown gender forename. More frequently, Urdiain is the last name as well as the forename.
Ana, Ramon, Laura, Lucia, José, Josã, Jorge, Jesus, Julio, Txema, Nerea, Elena, Marina, Martin, Manuel, Merche, Miguel, Silvia, Andoni, Analia, Angela, Angelo, Pilar, Pedro, Pablo, Paula, Eva, Iã, Sara, Saii, Angy, Abel, Rosa, Ruby, Jose, Juan, Aurora, Elva, Marta, Maite, Mirta, Mikel, Saira, Sonia, Amaia, Aitor, Belen, Patxi, Maria, and Carlos