ஒஸ்தி - Elenco
Silambarasan
Osthe Velan
Richa Gangopadhyay
Neduvaali
Jithan Ramesh
Balan
Revathi
Velan and Balan's Mother
Nizhalgal Ravi
Nirmala's Father
VTV Ganesh
Neduvaali's father
Santhanam
Selvam
Nassar
Velan and Balan's Father
Saranya Mohan
Nirmala
Vijayakumar
Minister
Sonu Sood
Boxer Daniel
Mayilsamy
Saravanan
Thambi Ramaiah
Maasaana Moorthy
Senthikumari
Masana Moorthy's wife
Mallika Sherawat
Mallika (Special appearance in the song "Kalasala")
John Kokken