Around the globe, Guiera (Guiera 
) is an extremely rare unknown gender forename. Much more frequently, Guiera is the last name as well as the forename.
Mr, Michalina, Tarcisio, Giovanna, Gilberto, Graziela, Gabriela, Berenice, Cleonice, Claudine, Adalgisa, Anderson, Fabiano, Viviane, Everton, Erlinda, Nicolas, Lourdes, Ruth, Luiz, Jose, Joao, Ines, Paulo, Michaliria, Guido, Marino, Miguel, Carlos, Flavio, Izemar, Giorgia, Edson, and Christina