Tanuja Samarth, known mononymously as Tanuja, is an Indian actress who predominantly works in the Hindi film industry. Part of the Mukherjee-Samarth family, she is the daughter of actress Shobhna Samarth and producer Kumarsen Samarth, and was married to filmmaker Shomu Mukherjee, with whom she has two daughters, actresses Kajol and Tanisha. A recipient of two Filmfare Awards, Tanuja is best known for her roles in the Hindi and Bengali films like Memdidi (1961), Deya Neya (1963), Chand Aur Suraj (1965), Baharen Phir Bhi Aayengi (1966), Jewel Thief (1967), Nai Roshni (1967), Antony Firingee (film) (1967), Pratham Kadam Phool (1969), Teen Bhubaner Pare (1969), Jeene Ki Raah (1969), Rajkumari (1970), Haathi Mere Saathi (1971), Anubhav (1971), Mere Jeevan Saathi (1972) and Do Chor (1972). Her pairings with actors Sanjeev Kumar, Rajesh Khanna, Dharmendra and Uttam Kumar were popular in the late 1960s and early 1970s.

Personal life
Main article: Mukherjee-Samarth family
Tanuja was born in a Marathi family to filmmaker Kumarsen Samarth and actress Shobhna Samarth. She has three sisters, including actress Nutan and one brother. Her grandmother, Rattan Bai, and cousin Nalini Jaywant were also actresses. Tanuja's parents parted amicably while she was still a child, and Shobhana became linked to actor Motilal. Shobhana produced debut films for Tanuja and her older sister, Nutan. Her two other sisters are; Chatura, an artist, and Reshma, and her brother is Jaideep, none of whom took to acting.

Tanuja married filmmaker Shomu Mukherjee in 1973. The couple has two daughters, actresses Kajol and Tanisha. Kajol is married to actor Ajay Devgan. Shomu died on 10 April 2008 from a heart attack, aged 64. Filmmakers Joy, Deb and Ram are her brothers-in-law. She is the aunt of actors Mohnish Behl, Rani, and Sharbani, and director Ayan Mukherjee.