Thaai Naadu is a 1989 Indian Tamil-language film directed by R. Aravindraj and starring Sathyaraj and Radhika.
The film is set in the 1960s and follows the story of Tamizhmani, a military officer falsely accused of giving intelligence to the enemy during an operation called Day Break. After his murder, Tamizhmani's son Anandhan sets out to restore his honor and find the real culprits.
The film was released on 16 February 1989 and features music composed by Manoj-Gyan with lyrics by Aabavanan.
