[ 1 syll. kay, ka-y ] The baby girl name Kay is also used as a boy name, though it is far more popular for girls. It is pronounced Key- †. Kay is of Old Greek origin. It is used mainly in English and German. The feminine name most likely developed as a short form of longer names starting with 'K-' or 'C-' such as Katharine, although the masculine name is of various other origins.
In addition, Kay is a familiar form of the English, German, Scandinavian, and Dutch Karen in the English language.
Kay is also a familiar form of the English Katherine.
Kay has 19 forms that are used in English and foreign languages. English forms of the name include Caye, Kaia, Kaie, Kaya (used in Japanese too), Kayana, Kayane, Kayann, Kayanna, Kayla, Kaylee, Kayleen, Kaylene, Kaylin, and Kya. Other English forms include the spelling variants Kae, Kai (used in Scandinavian and German too), and Kaye. Forms used in foreign languages include the German Cay and the German and Scandinavian Kaj.
Kay is uncommon as a baby girl name. At the modest height of its usage in 1939, 0.287% of baby girls were named Kay. It was #76 in rank then. The baby name has seen a marked decline in popularity since then, and is used only on an infrequent scale today. Within the family of girl names directly related to Kay, Kaylee was the most regularly used in 2015. Kay has in the last century been primarily given to baby girls. In 1947, 61 times more baby girls than boys were given the name Kay.
† Pronunciation for Kay: K as in "key (K.IY)" ; EY as in "ate (EY.T)"
A famous person named Kay is Actress Kay Kendall, born Justine Kay McCarthy May 21, 1926 - September 6, 1959, Withernsea, East Riding of Yorkshire, England.