Boy name · Greek
Cosmo
“order, world”
Vibes
Explore Cosmo further
Similar-feel alternatives, or middle-name candidates that pair well with Cosmo — both ranked by the same scoring system (vibe overlap, syllable rhythm, origin compatibility).
About the name
Cosmo is Greek — kosmos, "order, ornament, the world itself" — the ancient insight that the universe is arranged beautifully, compressed into a name. Medici dukes wore it as Cosimo; Kramer's first name and a fairy godparent keep it grinning.
Rare in America, Cosmo offers the entire universe with a wink attached.
Two bouncing syllables that mean everything, literally. It pairs well with grounding middles (Cosmo James, Cosmo Alexander). On our vibe map it is Celestial at full span with Whimsical orbit and Modern Minimalist mass.
More Greek names
Cosmo sits in our Greek set — these share its roots.
All Greek names →Cosmo — common questions
Is Cosmo a boy or girl name?
Cosmo is traditionally a boy name of Greek origin.
What does the name Cosmo mean?
Cosmo means “order, world” of Greek origin. Cosmo is Greek — kosmos, "order, ornament, the world itself" — the ancient insight that the universe is arranged beautifully, compressed into a name. Medici dukes wore it as Cosimo; Kramer's first name and a fairy godparent keep it grinning.
Where does the name Cosmo come from?
Cosmo is Greek in origin. Rare in America, Cosmo offers the entire universe with a wink attached.
How popular is Cosmo?
Cosmo did not make the top 1,000 boys' names in US Social Security Administration data for 2025, which makes it genuinely rare in the US.
Bring the name into the room
A couple of nice things named Cosmo you might want for the nursery.