Mahi Gill (or Mahie Gill) (born 19 December 1975) is an Indian actress, working in the Bollywood industry. She is best known for her role of Paro in Anurag Kashyap's critically acclaimed Hindi film Dev.D, a modern take on Sarat Chandra Chattopadhyay's Bengali novella Devdas for which she also won the 2010Filmfare Critics Award for Best Actress. She started her career in Punjabi films before making a debut in Bollywood with Dev.D.^[3][4] She consequently gained recognition after portraying Madhavi Devi, a sexually frustrated Begum, in the critically successful Saheb, Biwi Aur Gangster as well as its sequel.

Gill was born in Chandigarh, Punjab. She completed her Masters in theater from Punjab University, Chandigarh in 1998.

Gill got her first break with the Punjabi based Bollywood film Hawayein and has done a couple of Punjabi films along with theatre. Anurag first saw her at a party and instantly finalized her to play the character of Paro in movie Dev D. She has worked in Ram Gopal Verma's 'Not a Love Story' which was based on Niraj Grover Murder case of 2008. She also worked in Saheb, Biwi Aur Gangster with Jimmy Shergill and Randeep Hooda which was released on 30 September 2011. This movie earned her a nomination at the FilmFare awards for best actress. Gill has also appeared in Paan Singh Tomar with Irrfan Khan. It is the true story of an athlete who became a dacoit. In this, she played the title character's wife. Gill made her Telugu debut with Apoorva Lakhia's film Toofan, simultaneously shot with the Hindi version, Zanjeer. She did her first ever item number in Tigmanshu Dhulia’s film Bullett Raja starring Saif Ali Khan.