Surname Sairen (Sairen 
) , in all the world, is a rare cognomen. The family name Sairen is habitual in Malaysia, where it is a rare surname, Indonesia, where it is a very rare surname, and Pakistan, where it is an extremely rare surname. Not in comparison with a country's population, it is the most numerous in India, Malaysia, and Indonesia. Likewise, Sairen is the forename as well as the last name.