Trisha Krishnan was born on the 4th of May 1983 in Pallakad, Kerala, India. She speaks English, Hindi, Tamil and French. She studied at Church Park, India and Ethiraj College,CHENNAI.
She is an only child and she lives with her parents and her grandmother. She was introduced into the film industry through director Ameer Sultan's film, Mounam Pesiyadhey where she acted in opposite Surya. After that, she acted in Priyadarshan's Tamil project entitled Laysa Laysa.
She was crowned Miss Chennai in the year 2000 and won Miss Salem in the year 1999 and won Miss India Beautiful Smile in 2001.