Pennai Vazha Vidungal () is a 1969 Indian Tamil-language drama film directed and edited by R. Devarajan, and produced by M. Karnan who also handled the cinematography. It was released on 1 August 1969, and emerged a commercial success.
The film revolves around the change of heart of a wayward husband due to his submissive but just wife who, as a lawyer, fights for the rights of her own bigamous husband's other wife who has been deceived and maligned due to his promiscuity. The other woman eventually dies, thereby allowing the family to remain intact.
Pennai Vazha Vidungal, made under the Vijaya Chithra Films banner, is the inaugural production of M. Karnan who also handled the cinematography. The film was directed by R. Devarajan who also handled the editing.
The soundtrack was composed by S. M. Subbaiah Naidu, and the lyrics were written by Kannadasan.
Pennai Vazha Vidungal was released on 1 August 1969, and emerged a commercial success. The Indian Express wrote, "The movie has many an interesting melodramatic moment."