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27 September 1988 
Kochi, Kerala, India
Revathy (born 27 September 1988), known by her stage name Kaadhal Sandhya, is an Indian film actress who acts primarily in Tamil, Malayalam, Telugu and Kannada films. She made her debut as an actress in the 2004 Tamil film Kaadhal (2004), her performance in which earned her a Filmfare Award and Tamil Nadu State Film Award.
She is born as Revathy to a Chennai settled Malayali family. Her father Ajith is an employee of IOB and mother Maya, is a Beautician. She has an elder brother, Rahul. She had per primary education from Vidyodaya Girls Higher Secondary School, Chennai.
Sandhya was studying when she starred in the critically acclaimed Tamil love story Kaadhal. Initially, this role was offered to actress Gopika, however, due to date problems, this role went on to Sandhya. However, due to her rising fame, especially after the blockbuster film Dishyum, her second Tamil film, she had to discontinue her studies before even passing her 10th class.
After Kaadhal, for which she won the Filmfare Best Tamil Actress Award of 2004, she took up a Malayalam film titled Alice in Wonderland which she played as the sister of actor Jayaram. Then came the musical romance Dishyum with Jeeva. She was also a part of Mani Ratnam's stage show, Netru, Indru, Naalai and many other stage shows. In her third Tamil film, Vallavan, she had only a small role, and the film had only modest box office success. She also acted in Koodal Nagar with Bharath. She debuted in playback singing for her Tamil film Manjal Veiyil. In 2010, she received a role opposite Vishnuvardhan in the Kannada film Aptharakshaka directed by P. Vasu, her role was very much appreciated by the critics and gave her a very good recognition. The film went on to become a mega hit that run for 35 continuous weeks in the theatres.
She has signed Tarun Gopi's forthcoming film Soodhaatam, Second Innings and Long Sight.She has done many dance programmes on different stages.She learnt music in her childhood.She has judged popular reality shows like COMEDY STARS,LITTLE STARS both on Asianet.She has participated in many game shows also.
|2004||Kaadhal||Aishwarya Rajendran||Tamil||Tamil Nadu State Film Special Award for Best Actress|
|2005||Alice in Wonderland||Alice||Malayalam|
|2006||Annavaram||Varalakshmi (Varam)||Telugu||Filmfare Award for Best Supporting Actress - Telugu|
|2007||Kannamoochi Yenada||Devasena Arumugam||Tamil|
|2008||Velli Thirai||Herself||Tamil||Cameo appearance|
|2008||Mahesh, Saranya Matrum Palar||Saranya||Tamil|
|2009||Manjal Veiyil||Gayathri||Tamil||Also sang a song in this movie|
|2010||Irumbukkottai Murattu Singam||Thumbi||Tamil|
|2012||Padmasree Bharat Dr. Saroj Kumar||Actress||Malayalam||Special appearance|
|2012||The Hit List||Vikram's wife||Malayalam|
|2014||My Dear Mummy||Sandra||Malayalam|
- Raghavan, Nikhil (25 December 2009). "Merry days are here". The Hindu (Chennai, India). Retrieved 21 December 2011.
- Raghavan, Nikhil (7 October 2013). "Shotcuts: Gaining experience". The Hindu (Chennai, India).
- George, Vijay (11 April 2013). "Turning a new leaf". The Hindu (Chennai, India).