Vallavan (Tamil: வல்லவன்) (English: Expert) is a romantic thriller 2006 Tamil film written and directed by Silambarasan, starring himself in the title role along with Nayantara, Reema Sen and Sandhya whilst Santhanam, Premji Amaren, Sathyan and S. Ve. Shekhar play supporting roles. The dialogues are written by Balakumaran.The film's score and soundtrack are composed by Yuvan Shankar Raja.