Kay

girlEnglishChristian

Kay is an girl name of English origin, meaning “Pet form of K-names”.

MeaningPet form of K-names
GenderGirl
OriginEnglish
PronunciationKAY
TraditionModern & Classic, Christian
Used inUnited States, United Kingdom, Worldwide

Meaning and origin of Kay

Kay began as a short form of Katherine and other names starting with K, and is also simply the name of the letter. It became an independent girls' name in the English-speaking world in the early twentieth century. As a male name it recalls Sir Kay, King Arthur's foster-brother in the Arthurian legends, whose Welsh name Cai probably comes from the Latin Gaius. The meanings 'pure' and 'rejoice' are borrowed from Katherine and Gaius respectively.

Is Kay a religious name?

Kay has no religious meaning of its own; any Christian link comes through Katherine, the name of several saints.

How popular is Kay?

Popular mid-century in the US and UK, now mostly used as a middle name.

Gifts with the name Kay

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Spellings and variants of Kay

KayeCaiKai

Names similar to Kay

KateFayJoMae

More girl names

Frequently asked questions

What does the name Kay mean?

Kay means 'Pet form of K-names'. It is of English origin.

Does Kay have a religious meaning?

Kay has no religious meaning of its own; any Christian link comes through Katherine, the name of several saints.

How do you pronounce Kay?

Kay is pronounced KAY.

Is Kay a boy or girl name?

Kay is usually a girl name.

Updated October 2026. Spotted a mistake? Tell us.