Cassian
Boy · KAS-ee-an · Latin
Cassian is a boys' name of Latin origin, meaning “of the Cassius family”. In 2025 it ranked 309th for boys in the UK (163 babies) and 479th for boys in the US (633 babies).
What does Cassian mean?
Latin: from the Roman name Cassianus
“of the Cassius family”
St John Cassian was a 5th-century monk who brought Eastern monastic ideas to Gaul.
- Say it
- KAS-ee-an
More on Wiktionary.
Is Cassian a girl's or a boy's name?
Cassian is a boys' name. In 2025, it was given to 163 boys in the UK and 633 boys in the US. Too few girls were given it to be listed.
How popular is Cassian in the UK?
- Rank in 2025
- #309among boys
- Babies in 2025
- 163about 1 in 1,800 boys
- Five-year trend
- Rising fastup 162% in five years
- Same name in a class
- under 1%chance among 15 boys
In 2025, 163 boys in the UK were named Cassian, making it the 309th most popular name for boys. Five years earlier, in 2020, it was 567th.
2025 had the most boys named Cassian of any year since the records began in 1996.
Half of all the boys named Cassian in the UK since 1996 were born between 2017 and 2024, the years shaded on the chart below.
In 2025, 173 boys in the UK were given Cassian or a name that sounds the same. With every name's spellings counted this way, that ranks #305, up from #309 for this spelling alone.
- Cassian 163
- Kassian 10
Among boys in 2025, it was 287th in England and Wales and 560th in Scotland.
Cassian in the UK, year by year
| Year | Boys | Rank |
|---|---|---|
| 2025 | 163 | #309 |
| 2024 | 121 | #392 |
| 2023 | 138 | #349 |
| 2022 | 76 | #562 |
| 2021 | 75 | #577 |
| 2020 | 74 | #567 |
| 2019 | 46 | #773 |
| 2018 | 41 | #850 |
| 2017 | 41 | #860 |
| 2016 | 17 | #1,591 |
| 2015 | 18 | #1,476 |
| 2014 | 15 | #1,650 |
| 2013 | 19 | #1,398 |
| 2012 | 19 | #1,405 |
| 2011 | 22 | #1,252 |
| 2010 | 12 | #1,887 |
| 2009 | 12 | #1,852 |
| 2008 | 11 | #1,930 |
| 2007 | 15 | #1,540 |
| 2006 | 11 | #1,742 |
| 2005 | 11 | #1,701 |
| 2004 | 5 | #2,691 |
| 2003 | 3 | #3,593 |
| 2002 | 6 | #2,106 |
| 2001 | 6 | #2,049 |
| 2000 | 0 | – |
| 1999 | 7 | #1,749 |
| 1998 | 0 | – |
| 1997 | 0 | – |
| 1996 | 5 | #2,094 |
How popular is Cassian in the US?
- Rank in 2025
- #479among boys
- Babies in 2025
- 633about 1 in 2,700 boys
- Five-year trend
- Rising fastup 256% in five years
- Same name in a class
- under 1%chance among 15 boys
In 2025, 633 boys in the US were named Cassian, making it the 479th most popular name for boys. Five years earlier, in 2020, it was 1,035th. It first appears in the records in 1997.
2025 had the most boys named Cassian of any year since it first appeared, in 1997.
Half of all the boys named Cassian in the US since 1880 were born between 2020 and 2024, the years shaded on the chart below.
In 2025, 685 boys in the US were given Cassian or a name that sounds the same. With every name's spellings counted this way, that ranks #455, up from #479 for this spelling alone.
- Cassian 633
- Kassian 42
- Cassien 5
- Kasian 5
Cassian in the US, year by year
| Year | Boys | Rank |
|---|---|---|
| 2025 | 633 | #479 |
| 2024 | 464 | #617 |
| 2023 | 557 | #529 |
| 2022 | 244 | #938 |
| 2021 | 230 | #968 |
| 2020 | 196 | #1,035 |
| 2019 | 132 | #1,354 |
| 2018 | 136 | #1,328 |
| 2017 | 128 | #1,378 |
| 2016 | 19 | #4,941 |
| 2015 | 19 | #4,888 |
| 2014 | 19 | #4,862 |
| 2013 | 13 | #6,236 |
| 2012 | 22 | #4,387 |
| 2011 | 11 | #7,002 |
| 2010 | 14 | #6,032 |
| 2009 | 17 | #5,332 |
| 2008 | 13 | #6,388 |
| 2007 | 0 | – |
| 2006 | 8 | #8,726 |
| 2005 | 0 | – |
| 2004 | 8 | #8,137 |
| 2003 | 0 | – |
| 2002 | 5 | #10,660 |
| 2001 | 0 | – |
| 2000 | 0 | – |
| 1999 | 0 | – |
| 1998 | 0 | – |
| 1997 | 5 | #9,259 |
Nicknames for Cassian
- Cass 29 boys in the UK in 2025
Names like Cassian
Names given in the same years and the same naming tradition, with a similar sound.
Finn Cillian Kayden Ronan Callan Lochlan Kian Conan Brody Caelan Aiden Rowan
Other spellings of Cassian
Names related to Cassian
More Latin names
Oliver Olivia Leo Roman Aurora Emily Florence Mabel Luna Nora Rosie Emilia Max Nova Lucy Julian