The Ibans are a branch of the Dayak peoples of Borneo. In Malaysia, most Ibans are located in Sarawak, a small portion in Sabah and some in west Malaysia. They were formerly known during the colonial period by the British as Sea Dayaks. Ibans were renowned for practising headhunting and tribal/territorial expansion and had a fearsome reputation as a strong and successful warring tribe in ancient times.
Since the arrival of Europeans and the subsequent colonisation of the area, headhunting gradually faded out of practice although many tribal customs, practices and language continue. The Iban population is concentrated in Sarawak, Brunei, and in the West Kalimantan region of Indonesia. They live in longhouses called rumah panjai. Most of the Iban longhouses are equipped with modern facilities such as electricity and water supply and other facilities such as (tar sealed) roads, telephone lines and the internet. Younger Ibans are mostly found in urban areas and visit their hometowns during the holidays. The Ibans today are becoming increasingly urbanised while retaining most of their traditional heritage and culture.
The island is divided among three countries: Brunei, Indonesia and Malaysia. Approximately 73% of the island is Indonesian territory. The Malaysian states of Sabah and Sarawak in the north occupy about 26% of the island. The sovereign state of Brunei, located on the north coast, comprises about 1% of Borneo's land area. Borneo is home to one of the oldest rainforests in the world.