|Born||January 1, 1924|
Bondowoso, East Java
|Died||December 12, 1982 (aged 58)|
Surabaya, East Java
|Awards||National Hero of Indonesia|
|Battles/wars||Indonesian National Revolution|
Mas Isman (January 1, 1924 – December 12, 1982) was an Indonesian freedom fighter in East Java when it was part of the Dutch East Indies. He received a National Hero of Indonesia award from President Joko Widodo on November 5, 2015.
Mas Isman was the father of Hayono Isman, Indonesia's Minister of Youth and Sports Affairs.