boy's name
Cassian
KASS-ee-un
- Origin Latin
- Gender Boy
- Letters 7
- Popularity Top 1000 (US)
- Births on record 4,504
the United States
#479
2025 births
Cassian is a boy's name of Latin origin, from the Roman family name Cassius. That name's own meaning is uncertain — the usual gloss of empty or vain is a guess, and it may not be Latin at all.
- Cassian is a name of Latin origin.
- Peaked in 2025, when 633 babies were given the name.
- It has been rising over the past decade.
- Today about 1 in 5,238 babies in the United States is given this name.
- First appears in US birth records in 1997.
Cassian over time
Births per decade in the United States, 1990s to 2020s. The striped bar is the 2020s, still in progress — it covers 2020 to 2025, not a full ten years.
Show the numbers
| Decade | Births |
|---|---|
| 1990s | 5 |
| 2000s | 51 |
| 2010s | 518 |
| 2020s (to 2025) | 2,333 |
What Cassian means
Cassian means belonging to Cassius. What Cassius meant is not established: the connection to cassus, empty or hollow, is a proposal rather than a derivation, and the name may be Etruscan.
Where Cassian comes from
Cassian comes from the Latin Cassianus, of the family of Cassius, a Roman gens whose most famous member conspired against Caesar. The root is uncertain; the frequently repeated cassus, empty, is a guess of the same kind that produced most Roman name meanings. John Cassian, a fifth-century monk, carried the writings of the Egyptian desert fathers to Western Europe and shaped the Benedictine Rule, which is how the name entered the Christian calendar. Its recent English-language rise follows Cassian Andor of Rogue One and the Andor series; our records show it appearing in 1997 and climbing steeply after 2016.
Cassian in use
Cassian charts in six of the seven countries we track and reached its highest recorded use in 2025.
How popular is Cassian?
In 2025, Cassian was given to 633 babies in the United States, ranking #479 that year. It is a well-established, commonly used name.
Where Cassian is used
US figures omit any name given to fewer than five babies in a year, so the rarest names are absent from the source rather than absent from use. Data & sources.
Names that peaked alongside Cassian
These names rose and fell in the same era, which is why they tend to sound like they belong together.
Parents who like Cassian also like
Names whose popularity has risen and fallen in step with Cassian over the last century — the same taste, a different name.
2 nicknames for Cassian
Each one is a name in its own right — the figure underneath is how it is doing today, so you can see which short forms are rising and which have faded.
Cassian in other languages
The same name as it is spelled elsewhere — not shortenings, and not different names that merely sound alike. Each one has its own record here.
- Latin
- Cassius
Sibling names for Cassian
Names from the same era that won't rhyme or share an initial with Cassian — the two things that make a sibling set grate.
Common questions about Cassian
What does the name Cassian mean?
Belonging to Cassius, whose own meaning is uncertain. The empty or vain gloss is a guess rather than a derivation.
Is Cassian from Star Wars?
Its recent rise follows Cassian Andor closely, though the name is genuinely ancient and belongs to a fifth-century monk.
What is short for Cassian?
Cass, and increasingly Cash.
How popular is the name Cassian?
In 2025, Cassian was given to 633 babies in the United States, ranking #479 that year. It is a well-established, commonly used name.
Is Cassian a girl's or a boy's name?
Cassian is given almost entirely to boys in birth records.
When was Cassian most popular?
Cassian peaked in 2025, when 633 babies were given the name. It has been rising over the past decade.
What are the nicknames for Cassian?
Cassian is usually shortened to Cass and Cash.
Is Cassian a good name?
That is not something records can settle, but they can tell you what you would be choosing. Cassian currently ranks #289 in the United States. It has been rising over the past decade. Everything else — how it sounds with your surname, who it reminds you of — is yours.