Udaya Chandrika, better known by her screen name Radha (born 3 June 1965), is an Indian actress popular in the 80s and early 90s. She has acted in numerous movies with top actors of the South Indian cinema such as Dr.Vishnuvardhan, Ravichandran, Chiranjeevi, Kamal Haasan, Sivaji Ganesan, Balakrishna, Rajinikanth, Mohanlal, Venkatesh, Prabhu, Vijayakanth, Karthik Muthuraman, Karthik, Krishna and Sathyaraj . She has acted in over 200 movies in Tamil, Telugu, Malayalam, Kannada and Hindi. Not only that, She is currently a Judge in STAR Vijay Jodi Number One Season 6 Reality Dance program .
Radha hails from Kallara Village near Kilimanoor in Thiruvananthapuram District in Kerala.
Radha Nair and her husband Rajasekaran Nair, son Vignesh Nair, daughters Karthika Nair and Thulasi Nair have settled in Mumbai. For the past 20 years they have owned a chain of restaurants in Mumbai and two hotels called UDS in Kovalam at Kerala, which have won the best coastal beach resort award. They also own a restaurant in the UK named "Rock and Role Kitchen" (RRK).
Her sister Ambika is also an actress. Her daughter 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).