Cosmo is a distinctive choice, ranked #639 in 2025. Your child is likely to be the only Cosmo in their class.
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UK Rank 2025
#639
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About the Name Cosmo
Cosmo is at its highest recorded position in the UK, #639 in 2025 — the strongest showing it has had. The name has been a consistent presence in UK records since 1996.
Cosmo is uncommon in the UK, so your child is very likely to be the only Cosmo in their class.
⭐ Famous People Named Cosmo
Cosmo Gordon Lang — William Cosmo Gordon Lang, 1st Baron Lang of Lambeth, was a Scottish Anglican clergyman who served as Archbishop of York and Archbishop of Canterbury.
Cosmo Landesman — Cosmo Landesman is a British-based American-born journalist and editor.
Cosmo Duff-Gordon — Sir Cosmo Edmund Duff-Gordon, 5th Baronet, DL was a prominent British aristocrat and sportsman who owned land in Scotland, best known for the controversy surrounding his escape from the sinking of the RMS Titanic.
Biographical summaries are shortened from Wikipedia and are used under the CC BY-SA 4.0 licence; those summaries remain available under that same licence.
Frequently Asked Questions
Common questions about the name Cosmo
Unlikely. With around 57 UK babies named Cosmo per year, your child will almost certainly be the only Cosmo in their class, and possibly the only one in the whole school.
Cosmo is at its highest recorded position — #639 in 2025, with 57 births. In 2020 it ranked #766.
Cosmo is a distinctive choice sitting outside the mainstream UK top names. Parents choosing less common names often find their children appreciate the individuality as they grow up, rarely needing to add an initial to distinguish themselves.
Notable people named Cosmo include: Cosmo Landesman, Cosmo Sheldrake and Tony Cosmo. Short summaries for each appear below.
Cosmo does not appear in the US top 1,000 baby names, making it a distinctively British choice — your child is unlikely to encounter American Cosmos in the wild.
57
UK babies named Cosmo (2025)
< 1
Expected classmates with this name (class of 28)
~0.0
In a school of 600
↑ 127 places
Rank change (last 5 years)
🏫 Who else is in the room?
In a typical UK class of 28, highlighted children share the name Cosmo
Almost certainly the only Cosmo in the class
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UK Popularity (1996–2025)
Rank and birth count · ONS official data
No US data available for this name
✨ Similar names to Cosmo
Names with a similar style — each with their own classroom story
Sir Cosmo Edmund Duff-Gordon, 5th Baronet, DL was a prominent British aristocrat and sportsman who owned land in Scotland, best known for the controversy surrounding his escape from the sinking of the RMS Titanic.
Tony Cosmo is an actor and rock musician famous for his role in Reservoir Dogs, and for appearing in the first live action adaptation of Percy French's poem Abdul Abulbul Amir.