Magadheera (transl. Great Warrior) is a 2009 Indian Telugu-language fantasy action film written by K. V. Vijayendra Prasad and directed by S. S. Rajamouli. Based on the theme of reincarnation, the film was produced by Allu Aravind of Geetha Arts. The film stars Ram Charan and Kajal Aggarwal in lead roles, while Dev Gill and Srihari appear in prominent roles. The plot revolves around four people: a valiant warrior in charge of the princess' safety; the princess who loves him. The commander-in-chief who lusts after her; and an emperor who wants to conquer their kingdom. They all die before their wishes are fulfilled and are reborn after 400 years, at which point the warrior kills the scheming cousin with the support of the reformed emperor and wins over the princess.

Made on a budget of ₹35 crore, production began on 2 March 2008 while principal photography commenced on 19 March 2008. The cinematography was done by K. K. Senthil Kumar, and was edited by Kotagiri Venkateswara Rao. Production design was done by R. Ravinder, while the action sequences were choreographed by Peter Hein and the duo of Ram—Lakshman. The visual effects were designed by R. C. Kamalakannan, with assistance from Adel Adili and Pete Draper. It is the first Telugu film to list a "visual effects producer" in its credits. The soundtrack was composed by M. M. Keeravani, who collaborated with Kalyani Malik to score the background music.

Magadheera was released on 31 July 2009 across 1250 screens worldwide, to critical acclaim, and collected a distributor's share of ₹731 million. Its 1000-day theatrical run surpassed Chandramukhi (2005) as the longest running South Indian film. It is also the first Telugu film to have a home media release in Blu-ray. The film won the National Award for Best Choreography and Best Special Effects at the 57th National Film Awards as well as winning six Filmfare Awards, nine Nandi Awards and ten CineMAA Awards. The film's success catapulted the lead actors into stardom.

The film was dubbed into Tamil as Maaveeran and Malayalam as Dheera: The Warrior, and was released simultaneously on 27 May 2011 in more than 100 and 50 screens respectively, with both versions being commercially successful. In 2014, the film was further remade in Bengali as Yoddha: The Warrior by Raj Chakraborty.