Thangaikaga is a 1971 Indian Tamil-language film directed by D. Yoganand.
The film stars Sivaji Ganesan, Vennira Aadai Nirmala, and Lakshmi in its cast.
The plot revolves around Ramu and his sister Radha leading a normal life until their boss Moorthy develops feelings for Radha, leading to a shocking incident where Radha goes missing shortly after, coinciding with the murder of Moorthy.
The music was composed by M. S. Viswanathan, with lyrics by Kannadasan.
