Athadu (transl. Him or transl. He) is a 2005 Indian Telugu-language action thriller film written and directed by Trivikram Srinivas. The film features an ensemble cast of Mahesh Babu, Trisha, Sonu Sood, Prakash Raj, Nassar, Sunil, Sayaji Shinde, Kota Srinivasa Rao and Brahmanandam. It is produced by D. Kishore and M. Ram Mohan under the Jayabheri Arts banner. The soundtrack was composed by Mani Sharma. K. V. Guhan handled the cinematography of the film, while the film was edited by Sreekar Prasad.

The film went on to become one of the highest grossing Telugu films and marked Mahesh Babu's career resurgence after a few unsuccessful films the Film gained cult status It won 3 Nandi Awards and a Filmfare Awards South in Best Director category. It was later remade in Bengali as Wanted (2010), in Bengali as Rastar Chele (2009), and in Hindi as Ek: The Power of One (2009).