South Sea Islanders, also known as Australian South Sea Islanders (ASSI) and formerly referred to as Kanakas, are the Australian descendants of Pacific Islanders from more than 80 islands – including the Oceanian archipelagoes of the Solomon Islands, New Caledonia, Vanuatu, Fiji, the Gilbert Islands, and New Ireland – who were kidnapped or recruited between the mid to late 19th century as labourers in the sugarcane fields of Queensland. Some were kidnapped or tricked (or "blackbirded") into long-term indentured servitude or slavery, despite the Slavery Abolition Act 1833 criminalising slavery in Australia and other parts of the British Empire. At its height, the recruiting accounted for over half the adult male population of some islands.
Today, the majority of South Sea Islanders are also Aboriginal Australians or Torres Strait Islanders. As of the 2021 census, there were 7,228 people who claimed South Sea Islander ancestry in Australia, 5,562 of whom lived in Queensland. However, this is lower than the actual number of people with South Sea Islander heritage, with the true number estimated to be as high as 20,000 in Queensland alone as of 2022. The largest South Sea Islanders community is in the city of Mackay, where approximately 5,000 South Sea Islanders reside (approximately 5.93% of Mackay's population).