Udaya Chandrika, better known by her screen name Radha (born 3 June 1963), is an Indian film actress known mostly for her work in Tamil and Telugu films, though she also acted in Malayalam, Kannada and Hindi.
Radha hails from Kallara Village near Kilimanoor in Thiruvananthapuram District in Kerala. Her mother Kallara Sarasamma was Mahila Congress leader during 2014. She has two elder sisters, Ambika and Mallika, and two younger brothers, Arjun and Suresh.
Radha married Rajasekaran Nair on 10 September 1991. The couple has one boy and two girls: Vignesh Nair, Karthika Nair and Thulasi Nair; both the girls have started their career as actors. For the past 25, years the family has owned a chain of restaurants in Mumbai and Kovalam at Kerala, which have won the best coastal beach resort award. Radha's sister Ambika is also a famous actress. Karthika Nair started her career as an actress with the Telugu film Josh. Her other daughter Thulasi Nair started her career as an actress with the Maniratnam film Kadal (2012 film).
Radha is arguably the most successful of the "Kallara Sisters", the three sisters (Radha, Ambika, Mallika) in the art scene hailing from Kallara in Thiruvananthapuram District, Kerala. Ambika was also a highly successful actress in Tamil and Malayalam. Ambika and Radha acted together in a number of films, during the peak of their careers. They also co-owned a movie studio called "ARS Studios", which was later (2013) converted into the Jolly Jimkana hotel complex. She currently appears on television as one of the judges in the STAR Vijay Jodi Number One Season 6 Reality Dance program.