Oosaravelli (transl. Chameleon) is a 2011 Indian Telugu-language action thriller film directed by Surender Reddy and produced by B. V. S. N. Prasad under Sri Venkateswara Cine Chitra. It stars N. T. Rama Rao Jr, Tamannaah Bhatia, Prakash Raj, Vidyut Jammwal, Tanikella Bharani, Adhvik Mahajan, Murali Sharma, Payal Ghosh, and Rahman. The score and soundtrack for the film were composed by Devi Sri Prasad, whilst the cinematography was handled by Rasool Ellore and editing by Gautham Raju.

Oosaravelli was released worldwide on 6 October 2011 and received mixed reviews from critics. Despite this, the film grossed ₹57 crore and was a box-office success. The film is partly inspired by the French film Vengeance. It was later remade in Bengali as Rocky in 2013.