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Kay 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 names Keyes and Caius.
Baby names that sound like Kay are Kaye, Gay, Kaj and Key.
View a list of the 6 names that reference Kay.
Popularity of Kay
Kay is not a popular first name for men but a very popular surname or last name for all people (#1508 out of 88799). (1990 U.S. Census)
Displayed below is the baby names popularity of the name Kay for boys. (2010 statistics) Compare Kay with its variant forms and related boy baby names.