Indonesia's 1,340 Ethnic Groups: World's Most Diverse Nation

Indonesia is home to an estimated 1,340 distinct ethnic groups spread across 17,500+ islands, making it one of the world's most culturally diverse countries. The largest:

• Javanese – ~45% of population (Java island).
• Sundanese – West Java.
• Madurese – Madura island/East Java.
• Batak – North Sumatra.
• Others: Minangkabau, Bugis, Malay, Acehnese, Balinese, Sasak, Dayak, Papuan groups, and hundreds more.

Each group has its own language/dialect, customs, architecture, music, and cuisine. The national motto Bhinneka Tunggal Ika ("Unity in Diversity") reflects this mosaic.