Sivaji: The Boss is a 2007 Indian Tamil-language vigilante action film co-written and directed by S. Shankar and produced by AVM Productions. The film stars Rajinikanth in the main lead role alongside Shriya Saran, Vivek and Suman. In the film, a software systems architect returns to India from US to provide free medical treatment and education, but has to face hurdles from the system and an influential political leader.

A. R. Rahman composed the music in his 100th milestone composition, while the art direction, cinematography and editing were handled by Thota Tharani, K. V. Anand and Anthony respectively. With a budget of ₹600 million (US$6.9 million), the film was the most expensive Indian film at the time of its release. Rajinikanth became the highest-paid Indian actor with this film, earning a fees of around ₹260 million (US$3.0 million). Principal photography of the film commenced in November 2005 and lasted till February 2007. Filming took place in various locations across Hyderabad, Spain, Italy, New York City, Pune and Chennai. It became the first Indian film to use Dolby Atmos surround sound technology.

Released on 15 June 2007, Sivaji received mixed reviews from critics and became a commercial success by grossing ₹125—160 crore worldwide. It emerged as one of the highest-grossing Indian films at the time of its release and went on to win a National Film Award, three Filmfare Awards and two Vijay Awards. The film was converted into 3D and released on 12 December 2012 as Sivaji 3D. The runtime of the 3D version was shorter than the original, cut to 155 minutes. It also emerged as the first Tamil film to enter the 100 crore club in the history of Kollywood.

This marks the final cinematography work of K. V. Anand due to directing films since 2005, which he debuted in Kana Kandaen as well as the final dialogue writing work of Sujatha before his death on 27 February 2008.