In the entire world, Kayrul (Kayrul 
) is a rare primarily boy's, but scarcely female forename. The first name Kayrul is habitual in Bangladesh, where it is a rare boy's name, Saudi Arabia, where it is a very rare male name, and Malaysia. In absolute terms, it is the most numerous in Bangladesh, India, and Saudi Arabia. Very seldom, Kayrul is the last name as well as the forename.