Mas Isman
Mas Isman on a 2018 stamp of Indonesia
Personal details
Born	(1924-01-01)1 January 1924 Bondowoso, East Java
Died	12 December 1982(1982-12-12) (aged 58) Surabaya, East Java
Awards	National Hero of Indonesia
Military service
Allegiance	Indonesia
Branch/service	Indonesian Army
Rank	Mayor General
Battles/wars	Indonesian National Revolution

Mas Isman (1 January 1924 –12 December 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 5 November 2015.^[1]

Mas Isman was the father of Hayono Isman, Indonesia's Minister of Youth and Sports Affairs.