Mentawai Islands

The Mentawai Islands Regency is a regency of West Sumatra Province which consists of a chain of about a hundred islands and islets approximately 150 km (93 mi) off the western coast of Sumatra in Indonesia. They cover a land area of 6,033.76 km (2,329.65 sq mi) and had a population of 76,173 at the 2010 Census and 87,623 at the 2020 Census; the official estimate as of mid 2025 was 99,810 (comprising 51,861 males and 47,949 females).

Siberut at 3,877.9 km (1,497 sq mi) is the largest of the islands, occupying 64.27% of the land area of the regency. The other major islands are Sipura (or Sipora), North Pagai (Pagai Utara), and South Pagai (Pagai Selatan). The islands lie off the Sumatran coast, across the Mentawai Strait. The indigenous inhabitants of the islands are known as the Mentawai people. The Mentawai Islands have become a noted destination for surfing, with over 40 boats offering surf charters to international guests.