Ibnu Hadjar

Ibnu Hadjar
Birth name	Haderi
Born	(1920-04-19)19 April 1920 Ambutun [id], Dutch East Indies
Died	22 March 1965(1965-03-22) (aged 44)
Allegiance	Indonesia (?–1950) Islamic State of Indonesia (1954–1963)
Service/branch	Indonesian Navy Islamic Armed Forces of Indonesia
Years of service	?–1950, 1954–1963
Rank	Second Lieutenant
Battles/wars	Indonesian National Revolution Darul Islam rebellion

Ibnu Hadjar (19 April 1920 – 22 March 1965) was an Indonesian Navy officer and later the leader of Darul Islam in South Kalimantan from 1950-1963. He participated in Kalimantan Physical Revolution under the 4th Division of the Indonesian Navy. After the revolution, following the army reorganization, he was rejected from entering the military due to his illiteracy. He subsequently started an insurgency against the government and later joined the Islamic State of Indonesia. After surrendering he was arrested, and sentenced to death.