Sathyavani Muthu (15 February 1923 – 11 November 1999) was an Indian politician and an influential leader from Chennai, Tamil Nadu. She was a Member of the Legislative Assembly of Tamil Nadu, Rajya Sabha member and Union Minister. She began her political career as a member of Dravida Munnetra Kazhagam, began her own party, Thazhthapattor Munnetra Kazhagam and later joined the Anna Dravida Munnetra Kazhagam. In late 1990s, she again joined in DMK.