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Smart Baby Names: Dictionary of Baby Names, Meanings and Origins.

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Alphabetical List

Name Origins

Boy Name: Kay

Name: Kay
Pronunciation: \kay\
Gender / Sex: boy name boy (Kay's also a girl name)
Meaning: happy, rejoicing
Origin: Welsh
Related Names: Keyes, Caius
Sounds Like: Kaye, Gay, Kaj, Key
Variant forms: Kai, Keh
Rank as Last Name (Surname, Family Name): 1508


Kay \kay\ as a boy's name (also used as girl's name Kay), is of Latin and Old Welsh origin, and the meaning of Kay is "happy, rejoicing". From Gaius. Ancient name borne, in legend, by a knight of the Round Table. Now more common as a woman's name.

Kay has 2 variant forms: Kai and Keh.

For more information, see also related names Keyes and Caius.

Baby names that sound like Kay are Kaye, Gay, Kaj and Key.

View a list of the 5 names that reference Kay.


Kay is not a popular first name for men but a very popular surname or last name for both men and women (#1508 out of 88799). (1990 U.S. Census)

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