Thangai is a 1967 Indian Tamil-language action film directed by A. C. Tirulokchandar and produced by Balaji. The film stars Sivaji Ganesan, K. R. Vijaya, Kanchana, and Nagesh in supporting roles.
The music was composed by M. S. Viswanathan, with lyrics by Kannadasan. The dialogues were written by Aaroor Dass.
Thangai was released on 19 May 1967 and was remade in Telugu as Chelleli Kosam in 1968. It marked Sivaji Ganesan's first film under A. C. Tirulokchandar's direction, following his initial reluctance to accept the action genre role.
