Rajkumar Hirani (born 20 November 1962), also called Raju Hirani, is an Indian filmmaker, director, producer and editor known for his works in Hindi films. He is the recipient of several accolades, including four National Film Awards and eleven Filmfare Awards. Hirani is referred as one of the most successful filmmakers of Indian cinema. His movies are often lighthearted but revolve around significant societal issues with humour and emotional intelligence.

Starting his career as a film editor after passing out from FTII in editing, bad experience forced him to shift in ad films, where he made several successful ads. He edited his first film as a professional editor to Vidhu Vinod Chopra's Mission Kashmir (2000). Although Hirani wanted to make films, he took a one year break and came back with the script of Munna Bhai MBBS to Chopra to help him for financing it, and Chopra produced it himself. The film released in 2003 and became widespread critical and commercial success. It won the National Film Award for Best Popular Film Providing Wholesome Entertainment and the Filmfare Critics Award for Best Film, and earned Hirani his first Filmfare Award for Best Screenplay and a nomination for the Best Director.

After the success of MBBS, the sequel Lage Raho Munna Bhai (2006) which was second highest grosser of the year and coming-of-age drama 3 Idiots (2009), both of them won National Film Award for Best Popular Film Providing Wholesome Entertainment and nominated in Filmfare Award for Best Film, Best Screenplay and Best Director, won all for 3 Idiots, which was also a huge commercial success, became the highest grossing Indian film of its time. His next the science fiction religious satire PK (2014) with Aamir Khan as an alien again, the highest grossing Indian film of its time and a biography drama Sanju (2018) based on Sanjay Dutt released with critical and commercial success. Both films were nominated for Best Film, Best Director at Filmfare Awards, won Best Screenplay for PK. Domestically both films are currently the fifth and seventh highest grossing Bollywood film. Hirani is the founder of the production house Rajkumar Hirani Films. His upcoming film is Dunki, with Shah Rukh Khan.