Prashanth is an Indian film actor known for his works predominantly in Tamil cinema. He has also appeared in few Telugu films, Bollywood and Malayalam films. The son of actor-director Thiagarajan, Prashanth began his career at 17 by appearing in Vaigasi Poranthachu and went on to feature in other films including R. K. Selvamani's Chembaruthi (1992).
Prashanth rose to stardom with Mani Ratnam's action-comedy Thiruda Thiruda, and Shankar's blockbuster romantic comedy Jeans in which he played a dual role alongside Aishwarya Rai. In the late 1990s, he featured in a series of films such as Kaadhal Kavithai, Jodi and Parthen Rasithen. His 2011 release Ponnar Shankar was based on the historical epic and became a semi-hitPrashanth also owns a multi-storeyed jewellery mart in Panagal Park.