>
In the entire world, Cay (凯 , Cayo , Cay ) is a prevalent predominantly masculine, but very seldom female first name. The first name Cay is characteristic of China, where it is a common primarily masculine, but very infrequently feminine name, Peru, where it is quite a rare masculine name, and Paraguay. Measured by absolute frequency, this name is the most popular in China, India, and Brazil. Much less frequently, Cay is the last name as well as the forename.
Cay is also a name for the fictitious and mythical characters: Cay Qel-Droma , the Star Wars character and Caius Camillus , character in Kaamelott.