Family name Sainudin (Sainudin 
, ไซนูดิน , ไซนุดดิน ) , in the entire world, is a rare last name. The cognomen Sainudin is characteristic of Malaysia, where it is a rare surname, Indonesia, where it is a very rare surname, and India, where it is an extremely rare surname. Also, Sainudin is the forename as well as the last name.