Cosmo is a boy's name of Latin origin, meaning "universe" or "order". It was first used as a given name by the Italian writer Giovanni Boccaccio in his collection of tales, the Decameron, where it appeared as the name of one of the protagonists. The name Cosmo also has royal associations, having been borne by several members of European royalty, including two kings of Portugal and a king of Sweden. In recent years, Cosmo has gained popularity as a given name in English-speaking countries, perhaps due to its distinctive sound and association with the popular cosmopolitan magazine of the same name. It is often shortened to Cos or Kozzy. Some famous bearers of this name include Cosimo de' Medici, the founder of the powerful Italian Renaissance dynasty, and Cosmo Kramer, a character from the television sitcom Seinfeld.
"The name Cosmo has had a steady presence with six births each year from 2017 to 2022."