Enuga Sreenivasulu Reddy, also known as E. S. Reddy (1 July 1924 – 1 November 2020), was an Indian-born diplomat at the United Nations who led the anti-apartheid efforts at the UN's Special Committee Against Apartheid (where he was the secretary from 1963 to 1965) and its Centre Against Apartheid (where he was the director from 1976 to 1983). He also served as director of the UN Trust Fund for South Africa and the Educational and Training Programme for Southern Africa. During his time in these roles, he campaigned for economic boycott of the then Government of South Africa, advancing anti-apartheid actions including a combination of economic and social measures. He also lobbied for the release of the imprisoned leader Nelson Mandela.