Family name Masirun (Masirun 
) , globally, is a rare last name. The surname Masirun is habitual in Malaysia, where it is a very rare surname, Indonesia, and India, where it is an extremely rare surname. More frequently, Masirun is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Masirun | India, Malaysia, Indonesia |