Across the world, Luiu (Luiu 
) is a very rare epicene first name. The forename Luiu is characteristic of Southern Asia, particularly India, where it is an extremely rare gender-neutral name. More prevalently, Luiu is the last name as well as the forename.
Marc, Massimo, Alessio, Antonio, Claudia, Barbara, Roberto, Roberta, Gaspare, Giorgia, Speranza, Cristina, Gabriele, Giovanna, Giovanni, Giuliano, Giuseppe, Virginie, Fabrizio, Federico, Salvatore, Simonetta, Ilaria, Teresa, Andrea, Monica, Sara, Samu, Luca, Tino, Maria, Mario, Marco, Massi, Sonia, Carlo, Antonello, Paolo, Diana, Gabry, Greta, Laura, Lello, Luisa, Elena, Maryse, Matteo, Mattia, David, and Cristiano