Illarikam (transl. Matrilocal residence) is a 1959 Indian Telugu-language comedy drama film directed by T. Prakash Rao. It stars Akkineni Nageswara Rao, Jamuna and music composed by T. Chalapathi Rao. It was produced by A. V. Subba Rao under the Prasad Art Pictures banner. The film had a Silver Jubilee run and was recorded as a Blockbuster at the box office.Illarikam literally means a bridegroom going to the bride's family and living permanently with them (matrilocality); as against the custom of the bride going into the groom's family (patrilocality). This custom is observed in some rich families where the bride is the only child to their parents.

Illarikam was remade in four languages. L. V. Prasad produced the Hindi version titled Sasural (1961), which T. Prakash Rao directed. A. V. Subbarao himself remade it in Kannada as Mane Aliya (1964), in Malayalam as Kalithozhan (1966) and in Tamil as Maadi Veettu Mappilai (1967). All these versions were box office hits.