boy's name
Castiel
KAS-tee-el (English)
- Origin Hebrew
- Gender Boy
- Letters 7
- Popularity Uncommon
- Births on record 4,545
Castiel is a boy's name of Hebrew style, best known as the angel played by Misha Collins on the TV series Supernatural. It's usually read as a variant of Cassiel, an angel of Jewish tradition, and the -el ending is the Hebrew word for God.
- Castiel is a name of Hebrew origin.
- Peaked in 2019, when 337 babies were given the name.
- It has been rising over the past decade.
- Today about 1 in 14,801 babies in the United States is given this name.
- First appears in US birth records in 2009.
Castiel Over Time
Births per decade in the United States, 2000s to 2020s. The striped bar is the 2020s, which so far covers 2020 to 2025.
Show the numbers
| Decade | Births |
|---|---|
| 2000s | 13 |
| 2010s | 2,270 |
| 2020s (to 2025) | 1,641 |
What Castiel Means
Castiel carries the -el of many Hebrew angel names, meaning God, and is often glossed as my cover is God, a reading borrowed from Cassiel. The first element is unclear, so this is the likeliest sense rather than a firm one.
Where Castiel Comes From
Castiel is most plausibly a spelling of Cassiel, an angel who appears in Jewish mystical writing and later Western angel lore, sometimes linked with the planet Saturn. The ending -el means God in Hebrew, as in Michael and Gabriel. Sites disagree over the first half: Nameberry gives "my cover is God," while another site proposes a word for pure, a claim with no clear Hebrew basis. The name's modern life comes almost entirely from television. Supernatural introduced the character in 2008, and US birth records first list Castiel in 2009, which ties the name's rise closely to the show.
Castiel in Use
Few names show a clearer link to a single screen character. Fans of Supernatural often shorten it to Cas, the nickname used on the show.
How Popular Is Castiel?
In 2025, Castiel was given to 224 babies in the United States. It is used consistently but remains uncommon.
Where Castiel 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 Castiel
These names rose and fell in the same era, which is why they tend to sound like they belong together.
Parents Who Like Castiel Also Like
Names whose popularity has risen and fallen in step with Castiel over the last century — the same taste, a different name.
How to Say Castiel
- English KAS-tee-el
- French kas-TYEL
1 nickname for Castiel
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.
Castiel 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.
- Other forms
- Forms we hold no single language for — some are used across several, some are simply spelled differently.
- Cassiel
Sibling Names for Castiel
Names from the same era that do not rhyme or share an initial with Castiel — the two things that make a sibling set grate.
Common Questions About Castiel
What does the name Castiel mean?
It's usually read as a form of Cassiel, glossed "my cover is God." The -el ending means God.
Is Castiel in the Bible?
No. Castiel does not appear in the Bible, and Cassiel comes from later Jewish and Christian angel lore.
Where does the name Castiel come from?
Most parents know it from the angel on the TV series Supernatural, played by Misha Collins.
How popular is the name Castiel?
In 2025, Castiel was given to 224 babies in the United States. It is used consistently but remains uncommon.
Is Castiel a girl's or a boy's name?
Castiel is given almost entirely to boys in birth records.
When was Castiel most popular?
Castiel peaked in 2019, when 337 babies were given the name. It has been rising over the past decade.
What are the nicknames for Castiel?
Castiel is usually shortened to Cas.
Is Castiel a good name?
That is not something records can settle, but they can tell you what you would be choosing. Castiel currently ranks #1,008 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.