Aceh–North Sumatra islands dispute

Four small islands were disputed between the Indonesian provinces of Aceh and North Sumatra. The islands are located near Aceh's Aceh Singkil Regency and North Sumatra's Central Tapanuli Regency, with a total area of less than 1 square kilometer and no permanent inhabitants. They were initially assigned to Aceh when it was separated as a province from North Sumatra in 1956. However, the islands were assigned to North Sumatra in 2008 due to a reporting error from the Acehnese government. The controversy flared up in 2025, following a Ministry of Home Affairs regulation which positioned the island in North Sumatra, and was resolved in mid-June when president Prabowo Subianto made a decision to return the islands to Aceh and the regulation was revised.