Geographys

Aceh

The northern tip of Sumatra, which fought the Dutch for decades and then Indonesia. After the 2004 tsunami, a 2005 peace deal ended the war, and Aceh gained local political parties and, alone in Indonesia, the power to apply Islamic law.

Written from cited sourcesLast checked 28 September 2026Suggest a correction

INDONESIABanda AcehLhokseumawe
AcehAceh, from OpenStreetMap’s boundary cut to Atlas’s coastline, with the island of Simeulue to the southwest. The rest of Sumatra, Indonesia, continues to the southeast.

See it on the globe:Indonesia →

Sultanate and holdout

Aceh is the northern end of Sumatra, mostly mountains covered in rainforest, with Mount Leuser rising to 3,381 m. The Acehnese, a Malay people who are devout Muslims, live in the lowlands; the Gayo live in the highlands.[1]

In the 13th century Aceh became the first Muslim stronghold in the Indonesian archipelago. Its sultanate was at its height under Iskandar Muda (1607–36), when it fought the Portuguese at Malacca.[1] In 1873 the Dutch set out to conquer it. The Aceh War lasted more than 25 years; the sultan surrendered in 1903, but the Dutch never fully pacified the region.[1]

Rebellion against Indonesia

Aceh became an autonomous province in 1949 but was merged into North Sumatra in 1950. Open rebellion broke out in 1953, and making Aceh a special district equal to a province in 1956 did not end it.[1] In the 1970s resistance grew again under the Free Aceh Movement (GAM), and from 1990 there were periods of war between the separatists and Indonesian forces.[1]

Special status in 1999 and special autonomy in 2001 gave Aceh, alone among Indonesia’s regions, the power to apply sharia law. It is widely seen as a concession meant to weaken the insurgency.[3] In 2002 the province took the name Nanggroe Aceh Darussalam.[1]

Tsunami and peace

The Indian Ocean tsunami of December 2004 struck Aceh, heavily damaging its main ports.[1] Eight months later, on 15 August 2005, Indonesia’s government and GAM signed a peace agreement in Helsinki.[3][2] GAM agreed to hand over 840 weapons by the end of 2005, and Indonesia agreed to pull out its extra troops and police at the same time, watched by an Aceh Monitoring Mission.[2]

Under the agreement Aceh would run all public affairs except foreign affairs, external defence, national security, monetary and fiscal matters, justice and freedom of religion. It could keep 70% of the revenue from its oil, gas and other resources, use its own flag, crest and hymn, and form local political parties.[2] Its borders were fixed as they stood on 1 July 1956.[2]

A Law on the Governing of Aceh put this into effect in 2006. In the elections of 11 December 2006 the former GAM leader Irwandi Yusuf became governor, and GAM founded a party of its own, the Aceh Party.[4]

“Aceh is entitled to retain seventy (70) per cent of the revenues from all current and future hydrocarbon deposits and other natural resources in the territory of Aceh as well as in the territorial sea surrounding Aceh.”[2]

Helsinki Memorandum of Understanding, 1.3.4

Sharia

Aceh passed its first sharia bylaws in 2003, against alcohol, gambling and khalwat (unmarried couples being alone together), and set up sharia courts and a sharia police.[3] GAM’s leaders had rejected formal sharia, saying their fight was political rather than religious, and accepted it only after the Helsinki agreement.[3]

A 2009 criminal code allowed stoning for adultery; its 2014 replacement dropped stoning but made adultery and gay sex punishable by up to 100 lashes. By 2018 at least five non-Muslims had been caned under it, and human rights activists say non-Muslims are pressured to accept sharia courts.[3]

Timeline

  1. 1600s

    Height of the sultanate

    Sultan Iskandar Muda rules Aceh from 1607 to 1636.[1]

  2. 1873

    Dutch invasion

    The Netherlands begins the Aceh War.[1]

  3. 1903

    Sultan surrenders

    Aceh’s sultan surrenders to the Dutch.[1]

  4. 1953

    Rebellion

    Open revolt against Indonesia.[1]

  5. 1956

    Special district

    Aceh becomes a special district equal to a province.[1]

  6. 2003

    Sharia bylaws

    Aceh introduces its first sharia bylaws.[3]

  7. 2004

    Tsunami

    The Indian Ocean tsunami strikes Aceh.[1]

  8. 200515 August 2005

    Helsinki agreement

    Indonesia and GAM sign the peace deal.[2][3]

  9. 200611 December 2006

    First local election

    A former GAM leader becomes governor.[4]

  10. 2014

    Criminal code

    Aceh’s revised Islamic criminal code is passed.[3]

More autonomous regions

Sources

  1. [1]
    Aceh · Encyclopaedia Britannica
  2. [2]
  3. [3]
    Q&A: What you need to know about sharia in Aceh · The Jakarta Post · 4 March 2018
  4. [4]
    MoU between the Government of the Republic of Indonesia and the Free Aceh Movement · Peace Accords Matrix, Kroc Institute, University of Notre Dame
  5. [5]
    Aceh (relation 2390836) · OpenStreetMap contributors

    Outline for the map, cut to the 1:50m coastline and simplified.

Map geometry from Natural Earth via world-atlas. See credits.

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