Kajol Devgn is a well-known Bollywood actress known for her exceptional performances on screen. She attended St. Joseph's Convent School in Panchgani and was actively involved in extra-curricular activities such as dancing. In her early teens, Kajol was supposed to make her debut as an actress in a movie directed by her mother, Tanuja, but the project was cancelled. She eventually made her acting debut at the age of sixteen with the film Bekhudi (1992), while still in school. Later, she quit school to pursue a full-time career in the film industry.

She made her debut with Rahul Rawail's Bekhudi (1992) in 1992. Her film career flourished with commercial successes like Baazigar (1993), Yeh Dillagi (1994), Dilwale Dulhania Le Jayenge (1995), and Kuch Kuch Hota Hai (1998), which established her as a leading star in the 1990s. She was appreciated critically for her role in Gupt: The Hidden Truth (1997) and as an avenger in Dushman (1998). Another blockbuster Kabhi Khushi Kabhie Gham... (2001) won her multiple awards, after which she took a break. She returned to the industry after a brief period with the romantic thriller Fanaa (2006).

She was cast in My Name Is Khan (2010) in 2010 opposite Shah Rukh Khan - it was widely appreciated by critics worldwide. Kajol and Shah Rukh Khan became the first Indian actors to be invited by NASDAQ to open the NYSE American to promote My Name Is Khan (2010). She was also appreciated for her performance in Dilwale (2015) - it also featured other renowned stars like Shah Rukh Khan, Varun Dhawan, and Kriti Sanon. She was also cast in the period film Tanhaji: The Unsung Warrior (2020) in 2020.

She also appeared in the social drama Tribhanga (2021), her first collaboration with Netflix.

She holds a managerial position at Devgn Entertainment and Software Ltd., And as the supervisor, she launched the filmmaking-related portal Cineexplore in 2000. Devgn established another company, Ajay Devgn Films, in 2009.

She appeared with Ajay Devgn, and her mother Tanuja as the supervisor in Zee TV's 2008 reality show Rock-N-Roll Family. She was named a part-time public broadcaster Prasar Bharati member in 2016.

The Chief Minister of Maharashtra Devendra Fadnavis honored her with the Swabhimani Mumbaikar Awards. She was also included on Forbes India's "Celebrity 100", a list based on the income and popularity of India's celebrities, in 2012, 2013, and 2017.

She has won 23 awards, including 6 Filmfare Awards, 5 Screen Awards, 4 Zee Cine Awards, 1 Stardust Award and 1 Bengal Film Journalists' Association Award, and one Bollywood Movie Award till the year 2021. She was also honored with the Rajiv Gandhi Award for her contribution to Indian cinema in 2002. Kajol was listed in the Box Office India's "Top Actresses" for five consecutive years (1995-1999), topping the list in 1998.

In 2001 and 2006, she was featured in Rediff annual "Top Bollywood Actresses" listing. And in 2007, she received Karamveer Puraskar, presented by the Mumbai Pradesh Young Congress, for her social work in helping educate unprivileged children.

During the shooting of Gundaraj in 1994, Kajol and Ajay Devgn started dating. They eventually tied the knot on 24th February 1999 in a traditional Maharashtrian wedding ceremony held at Devgn's residence.