Surname Guildo (Guildo 
) , in the world, is a very rare family name. The cognomen Guildo is characteristic of Israel, where it is a very rare surname, Philippines, and Peru, where it is an extremely rare surname. Measured by absolute frequency, it is the most numerous in Philippines, Mexico, and Peru. More prevalently, Guildo is the forename as well as the last name.
Cyr, Nadeau, Marsano, Machado, Morneau, Miranda, Saravia, Scherer, Barrera, Batalla, Paradis, Plourde, Ouellet, Aranibar, Beaulieu, Laplante, Levesque, Thibault, Pelletier, Rodriguez, Deschenes, Levasseur, Lepage, Lavoie, Gagnon, Dumont, Roy, Sena, Cruz, Back, Beck, Dube, Luna, Morin, Silva, Soucy, Theriault, Chang, Braun, Rioux, Santos, Alegre, Araujo, Côté, Bulfon, Racine, Dextre, Dionne, Bosse, and Francoeur