Kay is a common name that can refer to both males and females. It is often used as a standalone name or as a short form of longer names like Katherine or Kayden. The name has various meanings in different cultures, often associated with qualities like purity or joy. In popular culture, Kay can refer to characters in books, movies, or television shows. For example, Kay is a character in the Arthurian legend, known as the foster brother of King Arthur. The name has also appeared in various songs and works of art, making it a versatile and recognizable name.