B ianca Rinehart is an Australian mining heiress and the eldest daughter of Gina Rinehart, Australia's richest person. She is the granddaughter of the legendary and controversial iron ore magnate, Lang Hancock. Her wealth is derived from her position as a beneficiary of a family trust that holds a substantial stake in Hancock Prospecting, the massive private mining company built by her mother.

Bianca Rinehart's public profile has been shaped by a long and bitter legal dispute with her mother over control and management of the multi-billion dollar family trust. In 2015, a court appointed her as the trustee, replacing her mother, giving her significant responsibility over the trust's assets on behalf of herself and her siblings. Despite the family conflicts, she is a billionaire several times over due to the immense value of Hancock Prospecting, which profits from massive iron ore royalties and mining operations in Western Australia.