Kay meaning, boyKay (boy)

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Meaning and name origin

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 boy names Keyes and Caius.

There are 3 feminine forms of Kay: Jay, Kai and Kaylee.


Kay is not a popular first name for males but a very popular surname or last name for all people (#1508 out of 88799, Top 2%) (2000 U.S. Census).

Displayed below is the baby name popularity of the name Kay for boys. Kay reached its highest rank of #572 in the U.S. in 1930-1939. (2014 statistics).

Top 1000 baby names ranking of Kay name in U.S.

Top 100 baby names ranking of Kay outside U.S.

Displayed below is a comparison of the popularity of the boy name Kay and its variant forms. Popular variation forms ranked in the Top 1000/100 are Kai (#177) and Kay. (2014 statistics).

Top 1000 baby names ranking of Kai, Kay in U.S.

Top 100 baby names ranking of Kai outside U.S.

Similar Names

Kay is also pronounced similarly to Cai, Caw, Cayo, Coy, Kaye, Key, Keye, Koa and Kye. Other suggested similar baby names are Bay, Day, Fay, Gay, Jay, KC, Kacy, Kaj, Kam, Kaz, Klay, Ray, Tay and Way. These names tend to be more commonly used than Kay.