NameCensus.

UK boy's name

Cosimo

Derived from the Italian form of the Greek name Kosmas, meaning "order, decency.".

For 2026, the newest official UK baby-name figures on this page are from 2024. That release is the current official benchmark rather than a forecast.

Cosimo is a boy's name in the UK records. People looking for Cosimo popularity in 2026 should use the latest official release, which is 2024 in this profile. In that release it ranked #4270, with 4 babies registered with the name. Its strongest year in the published records was 1999, with 6 births.

This profile covers 77 England and Wales registrations across 18 recorded years from 1999 to 2024. The figures come from ONS England and Wales, so the page is a view of published baby-name registrations rather than a forecast or a live count of people using the name today.

The latest count is about 67% of the recorded peak, which gives a quick read on how the name has moved since its high point.

We estimate that about 77 living people in the UK are called Cosimo. This uses published birth registrations from England and Wales, Scotland and Northern Ireland, then applies ONS national life tables to estimate how many are likely still alive. It does not forecast extra births for 2025 or 2026.

Key insights

  • Cosimo ranked #4270 for boys in England and Wales in 2024, with 4 registrations.
  • The name peaked in 1999, when 6 boys were registered as Cosimo.
  • About 77 living people in the UK are estimated to have Cosimo as a first name, after adjusting past birth registrations with ONS life tables.

Latest rank (E&W)

#4270

2024

Births in 2024

4

Latest year

Peak year

1999

6 births

Estimated living

77

2026

Meaning

What does Cosimo mean?

The name Cosimo has its origins in the Greek language, specifically derived from the words "kosmos," meaning "order" or "decorum," and "kosmeō," meaning "to adorn" or "to arrange." The name was prevalent in ancient Greek culture and can be traced back to the 6th century BC.

In the early days of the Byzantine Empire, the name Cosimo gained popularity among the Greek-speaking population. It was often associated with individuals who possessed a sense of order, discipline, and elegance. Several notable figures from this period bore the name, including Cosimo of Jerusalem, a 6th-century monk and theologian known for his scholarly works.

During the Renaissance era, the name Cosimo experienced a resurgence in Italy, particularly in Florence. One of the most famous bearers of this name was Cosimo de' Medici (1389-1464), a prominent figure in the Medici family and a renowned patron of the arts and humanities. His influence and wealth contributed significantly to the cultural and artistic renaissance in Florence.

Another notable figure was Cosimo I de' Medici (1519-1574), the first Grand Duke of Tuscany. He was a skilled statesman and military leader who played a crucial role in consolidating the power of the Medici dynasty in the region.

In the realm of literature, Cosimo III de' Medici (1642-1723), the Grand Duke of Tuscany, was a passionate scholar and collector of books. His vast library, known as the Laurentian Library, is considered one of the most significant repositories of manuscripts and rare books from the Renaissance period.

Cosimo Rosselli (1439-1507) was an Italian Renaissance painter known for his frescoes in the Sistine Chapel and his contributions to the development of early Renaissance art in Florence.

Beyond the Medici family and the Italian Renaissance, the name Cosimo has been borne by various individuals throughout history, such as Cosimo Tura (1430-1495), an Italian Renaissance painter known for his innovative use of perspective and his depictions of mythological subjects.

Overall, the name Cosimo has a rich history rooted in ancient Greek culture, flourishing during the Byzantine Empire and later becoming prominent in Italy during the Renaissance period, particularly associated with the influential Medici family and their patronage of the arts and humanities.

Sourced from namecensus.com.

Popularity

Cosimo over time

The chart below shows babies named Cosimo registered in England and Wales in the years where the name appears in the published records, from 1999 to 2024. Empty years are left out so rare names are not stretched across long periods where the published files do not show any registrations.

For Cosimo, the clearest high point is 1999. The latest England and Wales figure is 4 births in 2024, compared with 6 at the peak.

Babies born per year

Cosimo
02356199920112024

Decades

Cosimo by decade

Decade totals smooth out the yearly jumps and make it easier to see whether Cosimo was a short-lived spike or a name that stayed in regular use. Average rank is calculated only from years where a published rank exists.

Decade Average rank Total births Years covered
2020s #3691 24 5
2010s #3768 31 7
2000s #3807 16 5
1990s #1850 6 1

Related

Names similar to Cosimo

FAQ

Cosimo: questions and answers

How popular is the name Cosimo in the UK right now?

In 2024, Cosimo was ranked #4270 for boys in England and Wales, with 4 births registered.

When was Cosimo most popular?

The peak year on record was 1999, with 6 babies registered as Cosimo in England and Wales.

What is the meaning and origin of Cosimo?

Derived from the Italian form of the Greek name Kosmas, meaning "order, decency.".

How many people are called Cosimo in the UK?

A total of 77 babies have been registered as Cosimo across the 18 years of ONS England & Wales records shown here.

Which records is this page based on?

The England and Wales timeline uses ONS baby-name records. Scotland figures come from NRS and Northern Ireland figures come from NISRA. Counts are registrations in published baby-name files. The living estimate uses those birth registrations with ONS national life tables.