Cognomen Sainap (ไซนับ 
, ไซหนับ , ซัยนับ ) , in all the world, is a rare last name. The surname Sainap is characteristic of Indonesia, where it is a rare surname, Malaysia, where it is a very rare surname, and India, where it is an extremely rare surname. More prevalently, Sainap is the forename as well as the last name.