Ainthu Ainthu Ainthu is a 2013 Indian Tamil-language action thriller film directed by Sasi from a story by Aravind-Sureshkumar. It stars Bharath and Chandini Sreedharan in the lead roles, while Erica Fernandes and Santhanam appear in supporting roles.

Sasidharan known as Sasi is an Indian film director and screenwriter working primarily in Tamil cinema. He made his directorial debut with Sollamale in 1998, followed by a series of successful romance films like Roja Kootam (2002), Dishyum (2006), and Poo (2008). His first action film was Ainthu Ainthu Ainthu (2013), followed by Pichaikkaran (2016) and Sivappu Manjal Pachai (2019)