Chancellor House is a South African group of companies active in the mining, engineering, energy and information technology sectors. It is named after Chancellor House, the building where the law firm of Nelson Mandela and Oliver Tambo was located. After initially being exposed as a surreptitious funding front for the African National Congress it was subsequently acknowledged as an in-house investment firm for the party. It is best known for the controversy surrounding the award to it of lucrative black economic empowerment and parastatal contracts.