Ontari (transl. Loner) is a 2008 Indian Telugu-language psychological thriller and action drama film produced by Pokuri Babu Rao under the Ee Taram Films banner and directed by B.V. Ramana. The film stars Gopichand and Bhavana, with music composed by Mani Sharma. It was released theatrically on 14 February 2008. The film is a loose adaptation of the 2004 British film Dead Man's Shoes.

Ontari received mixed reviews from critics, with praise for Gopichand’s performance, humour, and editing, while criticism was directed at the weak screenplay and Ramana's direction.

The film was later remade twice in Bangladesh as Boss Number One (2011) and Premik Number One (2013), both starring Shakib Khan.