Sutoyo Siswomiharjo

Major General Sutoyo Siswomiharjo
Born	(1922-08-28)28 August 1922 Karanganyar, Kebumen, Kedu Residency, Dutch East Indies
Died	1 October 1965(1965-10-01) (aged 43) Lubang Buaya, East Jakarta, Indonesia
Buried	Kalibata Heroes Cemetery 6°15′26″S 106°50′46″E / 6.25722°S 106.84611°E / -6.25722; 106.84611
Allegiance	Indonesia
Years of service	1945–1965
Rank	Brigadier General (at death) Major General (posthumously)
Battles/wars	Indonesian National Revolution
Awards	National Hero of Indonesia

Major General Sutoyo Siswomiharjo (28 August 1922 – 1 October 1965) was an Indonesian general who was kidnapped and later murdered during the attempted coup by the 30 September Movement.