Cognomen Jayin (Jayin 
) , around the globe, is a rare family name. The family name Jayin is habitual in South-eastern Asia, particularly Philippines, where it is a rare surname, Malaysia, where it is a very rare surname, and Indonesia. Not in comparison with a country's population, this name is the most popular in India, Philippines, and Indonesia. More frequently, Jayin is the forename as well as the last name.