Meaning and name origin
Cosmo \c(o)-smo, cos-mo\ as a boy's name is of Italian and Greek origin, and the meaning of Cosmo is "order, harmony, beauty". Italian form of Greek Kosmas. Saint Cosmos, a martyr, was patron saint of the Italian city of Milan, and the name was further spread there by the fame of Cosimo de' Medici, Grand Duke of Tuscany and one of the chief patrons of the Italian Renaissance. His friend the Duke of Gordon took the name to Britain in the 17th century. Now also the name of an American soccer team.
There is 1 feminine form of Cosmo: Cosima.
Cosmo is not a popular first name for males but a somewhat popular surname or last name for all people (#57870 out of 88799, Top 65%) (2000 U.S. Census).
Displayed below is the baby name popularity of the name Cosmo for boys. Cosmo has not been ranked in the Top 1000/100 so far. (2014 statistics).
A suggested similar baby name is Como. Like Cosmo, this name is not commonly used.