Sanjay Balraj Dutt (সঞ্জয় দত্ত) is an Indian actor, playback singer and film producer who works in Hindi cinema in addition to a few Telugu, Kannada, Tamil, and Punjabi films. He acted in over 135 films. Dutt is regarded as one of the most popular actors of Indian cinema. Known for his versatile roles, style and intensity, he has often portrayed flawed heroes on screen. Dutt won several accolades including two Filmfare Awards, three Screen Awards and a Global Indian Film Award.

Part of the Dutt family, he is the son of actor-politicians Sunil Dutt and Nargis. Dutt made his acting debut with Rocky (1981), directed by his father. A career slump followed, with major exceptions being Vidhaata (1982), Naam (1986) and Thanedaar (1990). He later established himself as a Major Superstar with films like Saajan (1991) and Sadak (1991) and continued to deliver hits, such as Adharm (1992), Gumrah (1993), Khalnayak (1993), Daag: The Fire (1999), Haseena Maan Jaayegi (1999), Vaastav: The Reality (1999), Jodi No. 1 (2001), Munna Bhai MBBS (2003) and Lage Raho Munna Bhai (2006), the latter of which proved to be his biggest solo commercial success till date. His critically acclaimed performance in Vaastav won him the Filmfare Award for Best Actor. One of the most successful actors of the 1990s and 2000s, Dutt appeared in Box Office India's "Top Actors" list three times from 1991 to 1993. He topped the list twice in 1992 and 1993.

Sanjay Dutt was born in Bombay, Bombay State (now Mumbai, Maharashtra), to parents who were noted Hindi cinema actors Sunil Dutt and Nargis Dutt. He studied at The Lawrence School, Sanawar, and thereafter at Elphinstone College, Mumbai.

Born to a Hindu father and a Muslim mother, Dutt's paternal ancestry can be traced back to the Rawalpindi Division of western Punjab (present-day Pakistan); his paternal village being Khurd in Jhelum District. He is the maternal grandson of music composer Jaddanbai of Benares. and nephew of actor Anwar Hussain Through his father, he belongs to the Hussaini Brahmin community, which reveres Imam Hussain and traditionally said to have participated in the battle of Karbala, the community's fluid identity as half-Hindu and half-Muslim having made it vulnerable during the 1947 partition of India riots. Sanjay has two sisters, Priya Dutt and Namrata Dutt.

In the early 1980, Dutt had a relationship with his co-star from his first film, Tina Munim. After this relationship ended, Dutt married actress Richa Sharma in 1987. She died of a brain tumour in 1996. The couple have a daughter born in 1988, who lives in the United States with her maternal grandparents.

Dutt's second marriage was to air-hostess-turned-model Rhea Pillai on 14 February 1998. The divorce finalised in 2008. Dutt married Manyata (born Dilnawaz Sheikh) first registered in Goa in 2008 and then, in a Hindu ceremony in Mumbai, after two years of dating. On 21 October 2010, he became a father to twins, a boy and a girl.

Earlier, Dutt used to identify with Islam and wore Qur'anic verses around his neck, which Mahesh Bhatt attributed to his mother's family. Dutt also often frequented his maternal uncle's house and thus, his Muslim cousins. When the police interrogated him following the 1992-1993 Mumbai riots about an assault rifle he conceded getting from Anees Ibrahim, the brother of Dawood Ibrahim, he responded that "because I have Muslim blood in my veins, I could not bear what was happening in the city."

In the more recent years, Dutt has connected more with Hinduism and became a devotee of Shiva. In January 2024, he performed the pind daan, a Hindu ritual that involves paying homage to ancestors, for his deceased parents.

Sanjay Dutt was diagnosed with stage 4 lung cancer. He took treatment in Mumbai and now has recovered from lung cancer.

During the investigations of the bombings in 1993 in Mumbai, then known as Bombay, Dutt was among several people associated with Bollywood who were accused of involvement. It was alleged that Dutt accepted a delivery of weapons at his house from Abu Salem and co-accused Riyaz Siddiqui, who had also been implicated in relation to the Bombay blasts. It was claimed that the weapons formed a part of a large consignment of arms connected to the terrorists. Dutt, however, in his confession stated that he took only one Type-56 from the producers of his movie Sanam, for his own family protection. It has also been reported that Sanjay Dutt's father Sunil Dutt's political rivalry caused Sanjay Dutt's conviction.