Cognomen シラン (Silang 
, シラン) , in the world, is quite a common last name. The surname シラン is habitual in Philippines, where it is quite a rare surname, United Arab Emirates, and Qatar, where it is a rare surname. Measured by absolute frequency, it is the most numerous in Philippines, Indonesia, and United Arab Emirates. Very seldom, シラン is the forename as well as the last name.