Ananya was born as Ayilya to Malayali parents Gopalakrishnan Nair, a noted film producer, and Praseetha in Kothamangalam, Kerala. She has one brother Arjun, who is an engineering student. She appeared as a child artist in one of her father's productions (executive producer), Pai Brothers (1995). Ananya pursued a B.A. degree in Communicative English at St. Xavier's College, Aluva. During her childhood, she was an archer and won the State Championship. While representing her college in a television reality show "Star Wars", she was spotted by various directors and received acting offers. After declining five projects, she decided to give it a try, accepting to act in Positive.
Ananya got engaged to Anjaneyan, a businessman from Trichur on 3 February 2012. However 2 weeks later news came that she has called off her engagement after knowing that Anjaneyan had a previous marriage from which he had sought divorce. This news hasn't been confirmed by the actress nor by her family. Then in July the actress went and married Anjaneyan in a highly secretive event in Tirupati. Recently she revealed that she is married to Anjaneyan in a TV show Idavelayil. They have since been giving T.V (Asianet) interviews together as a couple.