Riya Sen (lang-bn????? ???; lang-hi???? ???, pron. IPA-hns?r?.a? ??e?n) (born Riya Dev Varma on 24 January 1981) is an Indian film actress and model. Riya, who hails from a family of actors including her grandmother Suchitra Sen, mother Moon Moon Sen and sister Raima Sen, began her acting career in 1991 as a child artiste in the film Vishkanya. Her first commercial success in her film career was with Style (Style (2001 film)), a 2001 Hindi low-budget sex comedy directed by N. Chandra. Some of her other films include producer Pritish Nandys musical film, Jhankaar Beats (2001) in Hinglish, Shaadi No. 1 (2005) Malayalam horror film Ananthabhadram (2005).

Riya was first recognised as a model when she performed in Falguni Pathaks music video Yaad Piya Ki Aane Lagi at the age of sixteen. Since then, she has appeared in music videos, television commercials (Television advertisement), fashion shows, and on magazine cover (Magazine)s.

Riya has worked as an activist and appeared in an AIDS awareness music video with the aim of dispelling popular myths about the disease. She also helped raise funds for pediatric eye-care. Riya has faced controversies such as a MMS clip (Multimedia Messaging Service) with actor Ashmit Patel, her semi-nude photograph on photographer Dabboo Ratnanis annual calendar and her on-screen kisses in a conservative Indian film (Cinema of India) industry.