: A psychological thriller (remake of Lucia ) where he played dual roles as a man with insomnia.

: A racy road film written by Vetrimaaran, where Siddharth played Prabhu.

Siddharth is one of the few actors in Indian cinema who has successfully navigated multiple film industries, but his roots and some of his most impactful work remain in Tamil cinema. From his debut as a youthful face in a Shankar blockbuster to his evolution into a socially conscious producer and powerhouse performer, his Tamil filmography is a testament to his versatility.

: A quirky, neo-noir black comedy produced by Siddharth himself.

Some of Siddharth's notable performances in Tamil cinema include:

Here’s a concise review of , highlighting his career trajectory, notable performances, and overall impact.