PK (translation: Drunk) is a 2014 Indian Hindi-language science fiction comedy-drama film edited and directed by Rajkumar Hirani and written by Hirani and Abhijat Joshi and jointly produced by Hirani and Vidhu Vinod Chopra under the production banners of Rajkumar Hirani Films and Vinod Chopra Films, respectively. A religious satire, the film stars an ensemble cast of Aamir Khan, Anushka Sharma, Sushant Singh Rajput, Boman Irani, Saurabh Shukla and Sanjay Dutt.

After the success of 3 Idiots (2009), Hirani and Joshi began scripting their next project; finding similarities with the plot of Inception (2010), they scrapped the film. It was later rewritten with a different angle and tone. During production, the film was initially titled Talli and later Ek Tha Talli before being changed to PK as the latter title was found to be too similar to Ek Tha Tiger (2012). The film's soundtrack was composed by Shantanu Moitra, Ajay–Atul and Ankit Tiwari with lyrics written by Swanand Kirkire, Amitabh Varma and Manoj Muntashir. UTV Motion Pictures acquired the distribution rights of the film. PK was the first Bollywood film to be shot in Belgium.

PK was released on 19 December 2014. Upon release, it received critical acclaim, with praise directed towards Khan's performance and the film's humour. The film received 8 nominations at the 60th Filmfare Awards, including Best Actor for Khan, Best Film, and Best Director for Hirani, winning two. Additionally, it won five Producers Guild Film Awards, and two Screen Awards. PK garnered the Telstra People's Choice Award at the Indian Film Festival of Melbourne. Produced on a budget of ₹1.22 billion, PK was the first Indian film to gross more than ₹7 billion and US$100 million worldwide. At the time of its release, it emerged as the highest-grossing Indian film of all time. PK has remained among the top 50 highest-grossing Indian films for over a decade, from its release in 2014 to 2024. With a worldwide gross of ₹750.60–769.89 crore, it continues to be one of the most successful films in Indian cinema, reflecting its lasting popularity and cultural significance. The film's final worldwide gross was ₹769.89 crore (US$118.92 million). It currently stands as the eighth highest-grossing Hindi film of all-time.