Castor
Pronunciation: [ k-AST-er ]
Does Castor flow with your last name?
A distinctive boy name with a rare, memorable quality.
Reviewed by the NamingEverything Editorial Team · Updated
Similar Names
Names Like Castor
Same sound, same style — different options
Nicknames
Nicknames for Castor
7 shorthand options for every setting
Meaning & Origin
Playground Safety
Similar to Castor
See all →What the Castor report tells you
$9Personalized to your state, siblings, and priorities. Free playground safety preview included.
Is Castor the #1 name in your state, or barely on the radar?
Enter your other kids' names. We score how well they sound together.
Playground safety check is free. Full report is $9.
What do you want to do with this name?
Add it to your shortlist. Not losing this one.
Put Castor head-to-head with your other picks.
Start comparing →See what Castor actually gets called.
Browse nicknames →Historical Record
Castor first appeared in US Social Security records in 1998.
Over 366 babies have been named Castor in the United States since SSA records began.
Today, Castor is a hidden gem — rare but distinctive , currently ranked #7,391 for boy names in the US .
Popularity Over Time
Year-by-year popularity data will be available soon.
Names You Might Also Love
See all →"one of the wind"
"strength, power"
"curved weapon for shooting arrows"
"burnt wine, distilled wine"
"crown, wreath, garland"
Compare Castor with:
Quick Facts
- Gender
- Boy
- Popularity Rank
- #7,391
- Total SSA Count
- 12
Alternative Spellings
Nicknames
Middle Name Ideas
Suggested pairings based on syllable flow and style
-
Timeless choice, extended 2-3 combo
-
Timeless choice, extended 2-3 combo
-
Timeless choice, extended 2-3 combo
-
Timeless choice, smooth 2-2 syllable flow
-
Timeless choice, extended 2-3 combo
-
Timeless choice, smooth 2-2 syllable flow
-
Timeless choice, smooth 2-2 syllable flow
-
Timeless choice, smooth 2-2 syllable flow
-
Timeless choice, smooth 2-1 syllable flow
-
Timeless choice, smooth 2-2 syllable flow
Sibling Match
Premium
Check how Castor fits with existing sibling names — style, sound, and origin.
Enter sibling names above to see compatibility.
Similar Names
See all names like Castor →For Parents
Start a baby registry
Free welcome box on Amazon
The Baby Name Wizard
Names that age well — book
Nursery name sign
Personalized wooden letters
We may earn a commission from these links.
Compare Castor with...
Can't decide?
Start a tournament bracket with Castor and other names you're considering.
Start a TournamentLike this name?
Check how Castor sounds with your surname and test for potential nicknames.
Analyze This NameExplore More Generators
-
🧝
Fantasy Name Generator
Create names for D&D and RPG characters
-
🐾
Pet Name Generator
Find the perfect name for your furry friend
-
🎭
Character Name Generator
Names for fictional characters across genres
Names You Might Also Like
View all →Illyrian origin
"one of the wind"
#7,267 in US
Welsh/Celtic origin
"strength, power"
#7,246 in US
Old English boga origin
"curved weapon for shooting arrows"
#7,500 in US
Dutch brandewijn origin
"burnt wine, distilled wine"
#7,348 in US
Greek origin
"crown, wreath, garland"
#7,481 in US
Welsh origin
"lion-like (from Llewelyn)"
#7,242 in US
Save Your Name Card
Download a shareable image with Castor's meaning, origin, and popularity. Ready for Instagram, Pinterest, or texting to your partner.
Frequently Asked Questions About Castor
Is Castor a boy or girl name?
How do you pronounce Castor?
How popular is the name Castor?
What are common nicknames for Castor?
Is Castor a common or rare name?
What boy names are similar to Castor?
About the Name Castor
Castor is a boy name .
Castor is currently ranked #7,391 in popularity for boy names in the United States.
Common nicknames for Castor include Cas, Cast, Casty, Castie, Cay, Caie, and Caskins. These shorter forms provide casual alternatives while keeping the elegance of the full name.
Alternative spellings of Castor include Castiel, Castle . Each spelling variation gives the name a slightly different character while preserving its sound and meaning.
Keep Exploring
Recommended for Parents
Start a registry
Free welcome box on Amazon
Baby Name Wizard
Names that actually age well
Nursery name sign
Personalized wooden letters
We may earn a commission from these links.
Sources
- U.S. Social Security Administration — National Baby Names Data (popularity rankings and historical trends)
- NamingEverything editorial research and analysis