Thira (transl. Wave) is a 2013 Indian Malayalam-language neo-noir crime thriller film directed by Vineeth Sreenivasan and scripted by his cousin Rakesh Mantodi. It stars Shobana alongside debutant Dhyan Sreenivasan in the lead roles. The film was produced by Manoj Menon under the banner ReelsMagic and distributed by LJ Films.

Thira was announced to be the first installment in a trilogy of thriller films. According to Vineeth, the film was inspired by the book The Road of Lost Innocence: The True Story of a Cambodian Heroine by Somaly Mam. The film marks the debut of Vineeth Sreenivasan's younger brother Dhyan Sreenivasan and also the return of Shobana Pillai to Malayalam cinema after almost a gap of five years. It was filmed by Jomon T. John and has music composed by Shaan Rahman. Principal photography of the film took place in Hyderabad, Chennai, Belgaum, and Goa. It was released on 14 November 2013. Despite receiving critical acclaim, due to less screening time, the film was a flop at the box office. The film was screened in IFFK 2013. Dinesh Prabhakar was the casting director for the movie and it's the first movie that introduced the concept of a casting director in a Malayalam movie.