Thani Kudithanam () is a 1977 Indian Tamil-language comedy drama film directed by S. A. Kannan. The film stars K. R. Vijaya and Cho, with Y. G. Mahendran, Pandari Bai and Major Sundarrajan in supporting roles. It is based on the play of the same name by Marina. The film was released on 4 March 1977.
Thani Kudithanam was based on the play of the same name by Marina. The film adaptation was directed by S. A. Kannan. The screenplay was written by Vietnam Veedu Sundaram.
Soundtrack was composed by M. S. Viswanathan Lyrics by Kannadasan & Vaali.
Thani Kudithanam was released on 4 March 1977. Kanthan of Kalki felt the film adaptation completely distorted the source play.