Siva Manasula Sakthi also known by the initialism SMS, is a 2009 Indian Tamil-language romantic comedy film written and directed by debutant M. Rajesh. It stars Jiiva and newcomer Anuya Bhagwat, a student of Pune Film Institute, in the lead roles, with Santhanam, Urvashi and Sathyan appearing in supporting and Arya appearing in a cameo role.

Muthukumarasamy Rajesh is an Indian film director and screenwriter, working primarily in the Tamil film industry. Known for making comedy films, he made his directorial debut with Siva Manasula Sakthi in 2009 and followed it up with Boss Engira Bhaskaran (2010) and Oru Kal Oru Kannadi (2012), all three of which emerged very successful at the box office. This was followed by a career setback, as his subsequent films were poorly received.