Castor

Q: What is the origin of Castor?

Castor is of Greek origin. The name carries significant cultural meaning and has been used across generations within its origin tradition.

Q: Is Castor a boy name?

Castor is traditionally a boy name. Modern naming practices are increasingly flexible, and names can be used across genders based on personal choice and cultural context.

male

Updated 6 months ago

Meaning

"Beaver"

A classical name linked to Greek mythology and Latin transmission, also carrying the literal meaning beaver in antiquity.

Themes:mythologyclassicaltwin

Mythology Mythological Celestial Cosmic Unique Rare

Fact-checked by Lily Anderson

M.F.A. Creative Writing, Sarah LawrencePublished NovelistName Collection Curator • Creative Names Editor

This name has been verified against authoritative sources including SSA data, etymology databases, and cultural naming traditions.

Popularity History of Castor

Full SSA rank history from 1880 to 2024

#6887Ranked nationally

SSA did not record this spelling in the national rankings for the available chart years. Names used fewer than 5 times in a year are omitted from the dataset.

Yearly Ranking Snapshot

Pick any SSA release year to inspect that year's national ranking and how it changed from the year before.

Year

Selected Year Rank

Unranked

Castor did not appear in the national SSA rankings for 2024.

Change Vs Previous Year

no national rank in 2024

Data Source

Popularity rankings are based on official data from the Social Security Administration (SSA), which tracks baby name applications in the United States.

Last updated: 2024 • Data source updated annually

Castor Nicknames

Familiar short forms, playful variations, and easy everyday options for Castor.

9 ideas

casy

Nickname

cast

Nickname

cie

Nickname

stor

Nickname

tory

Nickname

stoy

Nickname

Similar Names to Castor

male

Anthony

AN-thuh-nee

“Priceless; Invaluable”

#44

|Latin

male

Andrew

AN-droo

“Manly; Strong”

#68

|Greek

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Alexander

al-ig-ZAN-der

“Defender of Men”

#27

|Greek

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Arthur

AR-ther

“Bear Man”

#105

|Celtic

male

Austin

AW-stun

“Great, Venerable”

#107

|Latin

male

Alex

“Defender”

#205

|Greek

male

Adrian

AY-dree-un

“From Hadria”

#72

|Latin

male

Angel

“Messenger”

#63

|Greek

male

Antonio

“Priceless Inestimable”

#180

|Latin

male

Alejandro

“Defender of Men”

#184

|Spanish

Baby Name Lists That Include Castor

Browse every Namylab list page that currently includes Castor, from meaning and origin collections to letter, syllable, and themed baby name lists.

20 linked lists

❓ Frequently Asked Questions

What does the name Castor mean?

Castor means "Beaver". A classical name linked to Greek mythology and Latin transmission, also carrying the literal meaning beaver in antiquity

What is the origin of Castor?

Castor is of Greek origin. The name has been used historically across cultures and carries significant cultural meaning within its origin tradition.

How popular is the name Castor?

According to the latest SSA data, Castor is currently ranked #6887 in the United States. The name has shown interesting trends over the past century, with popularity varying based on cultural preferences and naming trends.

Is Castor a boy name?

Castor is traditionally a boy name. However, modern naming practices are increasingly flexible, and names can be used across genders based on personal preference.

What are good nicknames for Castor?

Popular nicknames for Castor include casy, cast, cie, cy, and more. These offer shorter, more casual alternatives for everyday use.

What names are similar to Castor?

There are many names similar to Castor in meaning, origin, or sound. Explore the Similar Names section to discover alternatives that may resonate with you.

Quick Facts

OriginGreek, Latin

Syllables2

Length6 letters

US Rank#6887

Trend↓ Falling

Starts withC

Sibling Ideas

Brothers

Andreas Alexzander Alexandro Andrea Alexandre

Sisters

Agnes Angeline Asia Angelia Alexus

Explore More Boy Names Like Castor

Castor has Greek roots, making it a wonderful choice if you love names from this heritage. Discover more options in our Greek baby names collection, where you'll find hundreds of names with similar cultural depth.

Castor appears in several of our curated collections. Check out Legendary Mythological Names and Unique Baby Names for more names with a similar feel. You might also enjoy browsing Latin Baby Names and Classic Greek Baby Names.

Before you decide, try our Full Name Preview to see how Castor pairs with your surname. The Sibling Name Matcher can help find names that complement Castor beautifully, and the Nickname Predictor reveals the most common short forms.

Explore our full baby name lists for origin-based, meaning-based, and themed collections, or head back to the baby name generator to continue your search.