Last name Sirun (思润 
, Sirun 
, Сирун 
) , in all the world, is quite a rare surname. The family name Sirun is characteristic of Armenia, where it is quite a rare surname, Georgia, and Malaysia. Not in comparison with a country's population, it is the most numerous in Indonesia, Malaysia, and Armenia. Likewise, Sirun is the forename as well as the last name.