In 2013 he appeared in three commercially successful films which hits 100 days. In his first release of the year,Kedi Billa Killadi Ranga, a dual hero coming-of-age comedy, Siva Karthikeyan partnered once again with Pandiraj and shot for the film in his hometown of Tiruchirappalli alongside Vimal. The film opened to positive reviews with critics. The film became a surprise success at the box office and ended up being a profitable venture for producers and distributors, It brings out the acting skill of him. His next success was through Dhanush's debut production venture Ethir Neechal, written and directed by Durai Senthilkumar, a former assistant of film Director, Vetrimaran. It is a story about a Common Young man having talent as a Runner, who strives to make his identity into a pride one. His third release in 2013, Director Ponram's comedy Varuthapadatha Valibar Sangam, saw him portray a carefree rural youth where he paired up with another newcomer Sri Divya. Actor Soori played an important role in the film as Sivakarthikeyan's close aide. It was also the first time that Siva Karthikeyan sang a song in a film and a promotional video of its making was released to market the film. He won positive reviews for his performance from critics, with Sify noting "Sivakarthikeyan is terrific as Bosepandi because he makes this yarn look so believable on screen with his body language, eyes and dialogue delivery". Another reviewer called him a delight to watch and claimed that he carried the script. The film completed 100 days during its theatrical run and is Sivakarthikeyan's biggest commercial box office success to date. Sivakarthikeyan's entertaining performances in 2013 has led him winning the Vijay Awards 2013 for the "Entertainer of the year". "It was the memorable moment," says Siva Karthikeyan.