Thai Poranthachu is a 2000 Indian Tamil-language drama film directed by R. K. Kalaimani.

The film stars Prabhu, Karthik and Kausalya whilst Vivek and Ponnambalam play supporting roles.

[5] Krishna Chidambaram of Kalki praised Prabhu's acting, Vivek's comedy but felt the director who moved the story without confusion loses track like a train.

[7] Indiainfo wrote "If you want to sacrifice your money and time for this stupid movie then go ahead.

[8] Malini Mannath of Chennai Online wrote "The film is fairly interesting in the earlier portions but soon falls into the familiar pattern".