K. S. G. Haja Shareef was an Indian industrialist and politician from Tamil Nadu. Shareef served in the Madras Legislative Assembly and its successor body, the Tamil Nadu Legislative Assembly, from 1957 to 1967 and from 1980 to 1984. A member of the Indian National Congress, Shareef was the Leader of the Opposition in the Tamil Nadu Legislative Assembly from 1983 until 1984.