Meaning A boy's name of Portuguese origin, it means "hyacinth." Origin of Giacinto Portuguese +-100%Zoom level changed to 1 Popular Middle Names Pronunciation 🔊 Listen Giacinto Similar Names Jacek Jacenty Xacinto Goncalo Guilherme Glaucio Godofredo Goncalvo Gualter Aabid Year by Year Popularity of Giacinto