Throughout the world, Riuz (Riuz 
) is an extremely rare masculine first name. Much more prevalently, Riuz is the last name as well as the forename.
Mr, Dario, David, Diana, Diego, Laura, José, Johan, Jorge, Jesus, Jhoel, Edwin, Erika, Henry, Martin, Marvin, Miriam, Miguel, Sandra, Samuel, Sagita, Susana, Pedro, Alvaro, Paola, Karen, Ms, Mia, Sam, Ana, Rio, Eva, Mari, Anna, Aina, Rosa, Rita, Luis, Jose, Juan, Fani, Flor, Maria, Simon, Sofia, Angel, Bruno, Pablo, and Andrea