Oosaravelli (transl. Chameleon) is a 2011 Indian Telugu-language action thriller film directed by Surender Reddy. It stars N. T. Rama Rao Jr. and Tamannaah with Prakash Raj in an important role. The score and soundtrack for the film is composed by Devi Sri Prasad. The film released across 1,800 screens worldwide. The film is remade into Bengali as Rocky (2013).

The film received mixed reviews from critics who praised the cast performances, action sequences, set-pieces and technical aspects. It broke previous Tollywood records of highest opening day gross by grossing ₹16.3 crore (US$2.0 million). The film completed 50 days run at the box office and was one of the Hit films of 2011.