Osthi (Tamil: ஒஸ்தி; English: Pinnacle) is a Tamil action film directed by S. Dharani, starring Silambarasan. A remake of the 2010 blockbuster Hindi film Dabangg, directed by Abhinav Singh Kashyap and written by Dileep Shukla, it featured Githan Ramesh, Richa Gangopadhyay, Sonu Sood, reprising his role from the original, Nassar and Revathi in supporting roles. Movie released world-wide on December 8th 2011.

Osthi Velan (Simbu STR) is a corrupt cop who fears for nothing. He has real motives for all his actions. He robs from rich and pays the poor. He has a half-brother Balan (Githan Ramesh). Osthi Velan’s life has an affectionate mother (Revathy), a funny cop Selvam(Santhanam) around him. Velan falls in love with Neduvali (Richa Gangopadhyaya), daughter of a drunkard (VTV Ganesh). They get attracted to each other.

Osthi Velan has clashes with villain, Boxer Daniel (Sonu Sood). Both cross swords with each other. After some dance, romance and some humour, Osthi Velan eventually fights Boxer Daniel in the climax, ripping his shirt showing his six-pack abs. All ends well with the success for Osthi Velan and he enters into wedlock with his beloved.