Avan Aval Adhu (transl. He, She and That) is a 1980 Indian Tamil-language film dealing with the then-groundbreaking issue of surrogate pregnancy, directed by Muktha Srinivasan and written by Visu. The film stars Sivakumar, Lakshmi, Sripriya and Thengai Srinivasan. The film had musical score by M. S. Viswanathan. It is based on the story Oru Singam Muyalaagirathu by Sivasankari. The film was remade in Telugu as Samsaram Santhanam.