Thazhuvatha Kaigal () is a 1986 Indian Tamil-language romantic drama film, written and directed by R. Sundarrajan. The film stars Vijayakanth, Ambika and Anuradha. It was released on 1 November 1986.
The song "Poonguil" was shot at Saradha Studios.
The music was composed by Ilaiyaraaja.
Thazhuvatha Kaigal was released on 1 November 1986, during Diwali, on the same day as another Vijayakanth film Dharma Devathai. The film was distributed by Metro Movies. Arbi of The Indian Express said Sundarrajan's direction "is thoughtful and even if he does not make box office this time, he has no reason to be disillusioned". Jayamanmadhan of Kalki wrote if Vijayakanth and Ilaiyaraaja were left out, the film is a murky stream with no direction. At the 7th Cinema Express Awards, Ambika received a "special award" for her performance.