NameCensus.

UK boy's name

Casian

A masculine name of Greek origin meaning "of a light complexion".

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.

Casian is a boy's name in the UK records. People looking for Casian popularity in 2026 should use the latest official release, which is 2024 in this profile. In that release it ranked #1517, with 17 babies registered with the name. Its strongest year in the published records was 2020, with 33 births.

This profile covers 192 England and Wales registrations across 11 recorded years from 2013 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 52% of the recorded peak, which gives a quick read on how the name has moved since its high point.

We estimate that about 191 living people in the UK are called Casian. 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

  • Casian ranked #1517 for boys in England and Wales in 2024, with 17 registrations.
  • The name peaked in 2020, when 33 boys were registered as Casian.
  • About 191 living people in the UK are estimated to have Casian as a first name, after adjusting past birth registrations with ONS life tables.

Latest rank (E&W)

#1517

2024

Births in 2024

17

Latest year

Peak year

2020

33 births

Estimated living

191

2026

Meaning

What does Casian mean?

The given name Casian has its origins rooted in ancient Roman culture, derived from the Latin word "Cassius," which itself is believed to have evolved from the Roman family name "Cassia." The name Cassius held significance in ancient Rome, associated with a prominent patrician family that played influential roles in the Republic's political landscape.

One of the earliest recorded instances of the name Casian can be found in the historical accounts of the early Christian church. Saint Casian of Imola, a Christian martyr and bishop who lived in the 3rd century AD, is revered as one of the earliest known individuals to bear this name. His unwavering faith and eventual martyrdom during the persecution of Christians under Emperor Diocletian have left an indelible mark on the name's legacy.

In the realm of literature, the name Casian appears in the works of the 5th century monk and theologian John Cassian, who is credited with introducing the principles of Eastern monasticism to the Western world. His seminal work, "Institutes" and "Conferences," had a profound impact on the development of monastic life in Europe.

Throughout history, several notable figures have borne the name Casian. One such individual was Casian of Nantes, a 6th century Frankish bishop and hagiographer, whose writings on the lives of saints have contributed significantly to our understanding of early medieval Christianity in Gaul.

Another prominent figure was Casian of Augsburg, a 9th century Benedictine monk and scholar who played a vital role in the Carolingian Renaissance, a period of cultural and intellectual revival in Western Europe. His contributions to the preservation and dissemination of ancient texts have been invaluable to our understanding of the era.

In the realm of art, the name Casian is associated with Casian del Pozzo, a 16th century Italian painter and architect who was a prominent figure during the Renaissance period. His works, which include frescoes and architectural designs, have left an enduring legacy in the artistic and cultural heritage of Italy.

These are just a few examples of the historical individuals who have borne the name Casian, each contributing to the rich tapestry of its legacy and significance across various disciplines and eras.

Sourced from namecensus.com.

Popularity

Casian over time

The chart below shows babies named Casian registered in England and Wales in the years where the name appears in the published records, from 2013 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 Casian, the clearest high point is 2020. The latest England and Wales figure is 17 births in 2024, compared with 33 at the peak.

Babies born per year

Casian
08172533201320182024

Decades

Casian by decade

Decade totals smooth out the yearly jumps and make it easier to see whether Casian 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 #1215 116 5
2010s #2296 76 6

Related

Names similar to Casian

FAQ

Casian: questions and answers

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

In 2024, Casian was ranked #1517 for boys in England and Wales, with 17 births registered.

When was Casian most popular?

The peak year on record was 2020, with 33 babies registered as Casian in England and Wales.

What is the meaning and origin of Casian?

A masculine name of Greek origin meaning "of a light complexion".

How many people are called Casian in the UK?

A total of 192 babies have been registered as Casian across the 11 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.