Cosmo
2025 SSA
Below 5 births
About Cosmo
With a touch of celestial power, a hint of clunky charm, and the totally cool -o ending, Cosmo may well be finally shaking itself free of both the Seinfeld association (which made it a punchline of a joke) and the cartoon fairy association from The Fairly OddParents. In fact, it is in the Top 1000 in the UK and a favorite on Nameberry.
An Italian variant of Cosimo or Cosmas, the name Cosmo has its roots in Greek, where it means "order, universe, beauty." It was first introduced to Britain when an 18th century Scottish Duke used it for his son, in honor of his friend, Cosimo III de' Medici.
Long neglected as it has been in the US, some parents are coming round to the idea of Cosmo again, with nearly 100 boys receiving the name in a recent year. Influential celebrity couple Scarlett Johansson and Colin Jost chose it for their son, born in 2021, while YouTubers Life with Beans used it in 2020, which may well help to change how people view Cosmo.
In literature, Baron Cosmo Bradwardine is a character in Sir Walter Scott's novel Waverley and Cosmo Topper is the befuddled banker in Thorne Smith's humorous novel Topper. In modern times Cosmo has become the short form for Cosmopolitan – both the magazine and the cocktail. And for those wishing to honor a medic in the family, Cosmo is also the name of the Arabian-born patron saint of doctors.
With its cosmic meaning and creative feel, Cosmo may also appeal to those looking for alternatives to Atlas, or for those who like Evren.
Cosmo is also given to girls.
Pronounced KOZ-moh.
As of October 2026, Cosmo ranked #1934 in US births in 2025 SSA, peaked at #933 in 1913, Nameberry popularity #224.
Popularity & trends
Data table
| Year | US rank | Births | Per million |
|---|---|---|---|
| 2014 | — | 0 | 0 |
| 2015 | #3,443 | 32 | 16.7 |
| 2016 | #4,651 | 21 | 11.1 |
| 2017 | #2,848 | 42 | 22.7 |
| 2018 | #2,903 | 41 | 22.6 |
| 2019 | #2,631 | 49 | 27.3 |
| 2020 | #2,268 | 60 | 34.8 |
| 2021 | #1,933 | 78 | 44.6 |
| 2022 | #1,708 | 99 | 56.7 |
| 2023 | #1,746 | 94 | 55 |
| 2024 | #1,683 | 99 | 57.5 |
| 2025 | #1,934 | 80 | 46.8 |
World rankings
Cosmo for boys
Similar names
These 20 names were selected by our users looking for other names like Cosmo.
Cosmo on lists
Famous Cosmos
- Cosmo Gordon LangBoy
Archbishop of Canterbury
- Cosmo GordonBoy
3rd Duke of Gordon, named for his father's friend, Cosimo III de' Medici, Grand Duke of Tuscany
- (Harrison) Cosmo Krikoryan JarvisBoy
English singer,songwriter and filmmaker
- Douglas Ray "Cosmo" CliffordBoy
American drummer of Creedence Clearwater Revival
- CosmoBoy
stage name of the lead singer of British band Flannel
- Cosmo AllegrettiBoy
American actor and puppeteer on TV's "Captain Kangaroo"
- (Henry) Cosmo Orme BonsorBoy
1st Baronet, English brewer and MP
- Cosmo Edmund Duff GordonBoy
5th Baronet, Scottish landowner, sportsman and Titanic survivor
- Cosmo Hamilton (born Henry Charles Hamilton GibbsBoy
English playwright and novelist
- Cosmo Joseph IacavazziBoy
American NFL football player
- Marcus "Cosmo" KleinBoy
German singer,songwriter
- Cosmo SheldrakeBoy
son of English biologist and author Rupert Sheldrake; brother of Merlin
- Cosmo SardoBoy
American actor
Cosmo in pop culture
- Cosmo KramerBoy
character on TV's hit sitcom "Seinfeld"
- Cosmo BrownBoy
character in film "Singin' In The Rain"
- Cosmo SpacelyBoy
stout, temperamental boss of George Jetson in animated series "The Jetsons"
- Cosmo TopperBoy
character in the Topper TV and movie series
- Cosmo CosmaBoy
Fairy Godfather on animated series "The Fairly OddParents"
- CosmoBoy
telepathic Russian space dog in Marvel comics
- Cosmo HillBoy
main character in "The Supernaturalist" by Eoin Colfer
- Cosmo MartinBoy
son of Susan Lewis and Chuck Martin on TV's "ER"
- Cosmo RenfroBoy
character in films "The Fugitive" and "U.S. Marshals"
- CosmoBoy
character in anime "Sonic X"
- CosmoBoy
puppet on British children's TV series "You and Me"
- "Cosmo the Merry MartianBoy
" comic book
- CosmoBoy
Jenna's baby brother on Clifford the Big Red Dog
- CosmoBoy
a private in comic strip "Beetle Bailey" by Mort Walker
- Conor "Cosmo" LawlorBoy
character in movie "Sing Street"
- Jason CosmoBoy
main character in novels by Dan McGirt
- Cosmo TraittBoy
Betelgeusian courier seen in the Star Trek: Discovery episode "That Hope is You, Part 1"