Boss is a 2006 Indian Telugu-language romantic action film, produced by D. Siva Prasad Reddy on Kamakshi Movies banner and directed and co-written by V. N. Aditya. Starring Nagarjuna Akkineni, Nayanthara, Poonam Bajwa and Shriya Saran. Music was composed by Kalyani Malik and Harry Anand and Cinematography for the movie was handled by Siva Kumar while editing was handled by Marthand K. Venkatesh. The film was released on 27 September 2006. The film was dubbed into Malayalam with the same title and into Hindi as Yeh Kaisa Karz (2008). The film was commercially unsuccessful.

Nayanthara is an Indian actress who predominantly appears in Tamil, Telugu and Malayalam films. One of the highest-paid actresses in India, Nayanthara was the only South Indian actress to be featured in the Forbes India "Celebrity 100" list of 2018. She has acted in more than 75 films in a career spanning over two decades and has won numerous awards, such as five Filmfare Awards South, one Tamil Nadu State Film Award and a Nandi Award.