Aval Yaar (English: Who is she?) is a 1959 Indian Tamil film, directed by K. J. Mahadevan. The film stars Sivaji Ganesan, Pandari Bai, S. V. Ranga Rao and Sowkar Janaki in lead roles. The film had musical score by S. Rajeshwara Rao. Despite excellent performances by the cast, the interesting storyline, excellent direction by Mahadevan and pleasing music of Rajeswara Rao, the film did not do well.