Inboekelinge child labour was instituted by Dutch-speaking settlers in Southern Africa during the 18th and 19th centuries. The word is derived from the Dutch verb inboeken (register; literally "in-book"), referring to the requirement of entering the names and details of the inboekeling (also spelled inboekseling), or apprentices, in the Landdros's register. It is widely seen as a form of slavery by historians of South Africa.
The system had its origin in the Cape Northern Frontier during the second half of the 18th century, when Dutch-speaking settlers would capture native children and enslave them until adulthood. When Voortrekkers migrated into the Transvaal during the 1840s, they brought the inboekstelsel system with them. Inboekelinge children were captured during raids, or handed over as apprentices by their conquered parents in return for land or goods. In some cases they were sold by Dutch-speaking settlers to other burghers, in what became known as the trade in "black ivory".