Tony Sithembiso Yengeni is a South African politician and former anti-apartheid activist who currently serves Second Deputy President of the uMkhonto weSizwe Party (MKP). He represented the African National Congress (ANC) in the National Assembly from May 1994 to March 2003, including as Chief Whip of the Majority Party from November 1998 to October 2001. He was a member of the ANC National Executive Committee between 1994 and 2022, though he resigned from legislative politics after he was convicted of fraud in 2003.