Meaning From Old Greek origin meaning 'beauty, harmony' from the element kosmos meaning harmony. Origin of Cosmo Greek +-100%Zoom level changed to 1 Popular Middle Names Michael, Paul, Sterling Pronunciation 🔊 Listen Cosmo COZ-mo Similar Names Cosme Tyresse Goerge Cormick Theophilus Romario Apolo Apollos Apollon Christopher Year by Year Popularity of Cosmo