"rejoice; pure"
Origin: Latin
Language: English
Kay
Pronunciation: [ k-AY ]
Does Kay flow with your last name?
Ancient Arthurian knight, simple and timeless
English
American
Welsh
Classic
Minimalist
Vintage
Strong
Reviewed by the NamingEverything Editorial Team · Updated
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Meaning & Origin
"keeper of the keys"
Origin: Old English
Language: English
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The Story of Kay
Kay as a masculine name has ancient roots — it appears in Arthurian legend as Sir Kay, foster brother and seneschal to King Arthur. The name derives from the Latin Caius or Gaius, a Roman praenomen of uncertain origin, sometimes linked to the Latin gaudere meaning to rejoice. In Welsh tradition, the character Cai was one of Arthurs most trusted knights.
Kay was a popular masculine name in the United States during the 1920s-1940s but has since shifted primarily to feminine use. Today it remains rare as a standalone boys name, though it retains appeal as a middle name.
In Arthurian legend, Kay is one of the oldest named knights, appearing in some of the earliest Welsh tales about Arthur. His character represents loyalty and practicality — grounded virtues that give the name a noble, stoic quality.
Historical Record
Kay first appeared in US Social Security records in 1950.
Over 765 babies have been named Kay in the United States since SSA records began.
Today, Kay is rising quickly in popularity , currently ranked #6,417 for boy names in the US .
Fun Facts
- Sir Kay appears in some of the earliest Arthurian texts dating back to the 6th century
- The name Kay/Kai is currently rising in popularity due to its gender-neutral appeal and connection to the name Kai
Kay in Other Languages
Latin
Caius
Welsh
Cai
French
Kay
German
Kay
Scandinavian
Kay
Popularity Over Time
#6,417
Current Rank
Rising Fast
Based on SSA data 1880–present
Year-by-year popularity data will be available soon.
Famous People Named Kay
K
Kay Francis
Actor
1905
Hollywood actress of the 1930s known for her sophisticated roles
S
Sir Kay Fictional
Other
Foster brother and seneschal of King Arthur in Arthurian legend, one of the earliest named Arthurian knights
K
Kay Scarpetta Fictional
Other
Protagonist of Patricia Cornwells forensic crime thriller series
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Compare Kay with:
Quick Facts
- Gender
- Boy
- Syllables
- 1
- Popularity Rank
- #6,417
- Total SSA Count
- 14
- Cultural Origins
- English American Welsh
- Pronunciation
- Easy
- Formality
- Moderate
- Cross-Cultural Ease
- High
Alternative Spellings
Middle Name Ideas
Suggested pairings based on syllable flow and style
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Classic pairing, smooth 1-2 syllable flow
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Timeless choice, English heritage match, quick 1-1 syllable combo
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Classic pairing, smooth 1-2 syllable flow
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Classic pairing, smooth 1-2 syllable flow
-
Timeless choice, English heritage match, quick 1-1 syllable combo
-
Classic pairing, smooth 1-2 syllable flow
-
Classic pairing, smooth 1-2 syllable flow
-
Classic pairing, smooth 1-2 syllable flow
-
Timeless choice, English heritage match, quick 1-1 syllable combo
-
Timeless choice, English heritage match, quick 1-1 syllable combo
Middle Names
Middle Names for Kay
7 name pairings with syllable flow tips
Sibling Names
Sibling Match
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Also a Girl Name
Kay is also used as a girl name, ranked #3887.
View Kay as a girl name →Similar Names
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Same Origin Names (English)
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combined Hebrew and Arabic interpretation origin
"God is beautiful"
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Berber origin
"land of God (via Marrakesh, Berber or..."
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Frequently Asked Questions About Kay
What does the name Kay mean?
"rejoice; pure" (from Latin). "keeper of the keys" (from Old English). Kay as a masculine name has ancient roots — it appears in Arthurian legend as Sir Kay, foster brother and seneschal to King Arthur. The name derives from the Latin Caius or Gaius, a Roman praenomen of uncertain origin, sometimes linked to the Latin gaudere meaning to rejoice. In Welsh tradition, the character Cai was one of Arthurs most trusted knights.
What is the origin of the name Kay?
Kay has Latin, Old English, English, American, and Welsh origins. In Latin, it means "rejoice; pure". In Old English, it means "keeper of the keys".
Is Kay a boy or girl name?
Kay is used as both a boy and girl name. As a boy name, it is ranked #6417. As a girl name, it is ranked #3887. Kay is more commonly used as a girl name.
How do you pronounce Kay?
Kay is pronounced k-AY.
How popular is the name Kay?
Kay is currently ranked #6417 in popularity for boy names in the United States.
What are good middle names for Kay?
Popular middle name pairings include Kay James, Kay Michael, Kay Robert, Kay Allen, Kay Thomas, Kay William, and Kay Edward.
What are good sibling names for Kay?
Names that pair well with Kay as siblings include June, Ray, Mae, Lee, Jay, Bea, and Cole.
How many syllables does Kay have?
Kay has 1 syllable, making it easy to say and remember.
Is Kay a common or rare name?
Kay is an uncommon name, ranked #6417 in the US. Its rarity gives it a distinctive, memorable quality.
What boy names are similar to Kay?
About the Name Kay
Kay is a boy name with English, American, and Welsh origins . The name means "rejoice; pure" in Latin .
Is Kay a boy or girl name? Kay is used as both a boy and girl name. As a boy name, it ranks #6,417 in popularity. As a girl name, it ranks #3,887. Kay is more commonly used as a girl name.
Kay is currently ranked #6,417 in popularity for boy names in the United States.
The name Kay has 1 syllable and is pronounced k-AY, making it easy to pronounce and remember.
Alternative spellings of Kay include Kayden, Kayson, Kayce, Kaysen, Kaycen . Each spelling variation gives the name a slightly different character while preserving its sound and meaning.
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Sources
- U.S. Social Security Administration — National Baby Names Data (popularity rankings and historical trends)
- Behind the Name (etymology and meaning research)
- NamingEverything editorial research and analysis