Surname Kaykay (Kaykay 
) , globally, is a rare family name. The surname Kaykay is characteristic of Myanmar, where it is quite a rare surname, New Zealand, where it is a rare surname, and Australia, where it is a very rare surname. Measured by absolute frequency, it is commonest in Myanmar, India, and the United States. Likewise, Kaykay is the forename as well as the last name.