The name Kay has several meanings:
1. As a masculine name it is a Welsh form of Gaius.
2. As a unisex names it is a short form of Katherine and other names beginning with "K".
Famous bearers
In Arthurian legend, Sir Kay was Sir Ector's son and King Arthur's foster brother and later seneschal, as well as one of the first Knights of the Round Table.
Bearers include Kay Thompson (1908 - 1998), an American female writer, composer, and actress;
Kay Starr (born 1922), an American female singer;
Kay van Dijk (born 1984), a Dutch male volleyball player;
Kay Panabaker (born 1990), an American actress.
