Udhayan (transl. Sun) is a 2011 Indian Tamil-language action film directed by Chaplin and produced by Prabhakaran. The film stars Arulnithi (in dual roles) and Pranitha in her Tamil debut, with Santhanam in a supporting role. The film was released on 29 June 2011.^[1]

The film was launched on 17 January 2011.^[2] The film featured Arulnidhi in dual roles for first time.

The songs were composed by Manikanth Kadri in his Tamil debut.^[3] The lyrics were written by Vaali, Yugabharathi, Annamalai, Surya and Muthamil.^[4]

The film opened to negative reviews from critics after its theatrical release on 29 June 2011. A reviewer from Behindwoods.com noted "Udhayan is predictable and has nothing extraordinary to offer."^[5] A critic from The New Indian Express noted "with a story-line that is oft-repeated and predictable, it's a passable entertainer".^[6] The Hindu wrote "Settling scores in a bloody fashion can get you nowhere says Udhayan (U/A). It has been said several times before but director Chaplin, a Pandiraj associate, who takes off on his own for the first time tries to impart the same with a storyline that juxtaposes sickle culture of the small town with the values of an average city household, thus keeping viewer interest alive".^[7] The film did not perform well at the box office.^[8]