Cassian
- US rank
- #479
- Syllables
- 2
- Peak
- #479 in 2025
633 babies were named Cassian in the US in 2025. It has climbed 556 places in five years.
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US births per million boys, 1997–2025
Most popular states (2025)
Similar names
Popularity: U.S. Social Security Administration (babies with 5+ births per year).
Did you know?
A few things about Cassian you might not know, from US birth records. Handy for convincing a partner, or a grandparent.
- How commonAbout 1 in every 2,698 baby boys born in the US in 2025 was named Cassian, 633 babies in all. In a typical school of 500 kids, your Cassian would very likely be the only one.
- HistoryCassian first shows up in US birth records in 1997, the first year at least 5 babies got it. It has been in use for 28 years since.
- Best yearCassian is at its all-time high right now: #479 in 2025.
- TrendCassian has climbed 556 places in the US rankings over the last five years and now sits at #479. Fast risers like this often keep climbing, so expect to hear it more.
- Where it's lovedCassian is most popular in Alaska, where it ranks #165, followed by Nevada (#243) and California (#301). It's in the top 1,000 in 34 states.
About the name Cassian
Cassian is a boy name of Irish origin. It has 7 letters and 2 syllables, starting with C and ending in “-ian”. US birth records list Cassian for boys from 1997 to 2025, in 22 of those 29 years. Its best year was 2025, when it ranked #479 among boy names. In 2025 it ranked #479, with 633 babies.
Origin:Irish names
| Decade | Babies per million | About 1 in |
|---|---|---|
| 1990s | 0.9 | 1,111,111 boys |
| 2000s | 2.5 | 392,157 boys |
| 2010s | 28 | 35,829 boys |
| 2020s | 225 | 4,443 boys |
More Irish boy names
- Boy name: Liam · resolute protector
- Unisex name: Owen · well-born
- Unisex name: Logan · little hollow
- Unisex name: Nolan · descendant of Nuallán
- Unisex name: Gael · a Gael
- Boy name: Arthur · possibly bear
- Unisex name: Ryan · little king
- Boy name: Dominic · of the Lord
Questions about the name Cassian
What is the origin of the name Cassian?
Cassian has Irish roots in our records. Other Irish names include Liam, Owen, Logan.
Is Cassian a boy or girl name?
Cassian is a boy name.
How popular is the name Cassian?
Cassian ranked #479 for US boys in 2025, given to 633 babies. Its best year was 2025 (#479).