Great Grand Masti (transl. Great Grand Fun) is a 2016 Indian Hindi-language sex comedy horror film directed by Indra Kumar. It is the third installment in the Masti (film series) after Masti (2004) and Grand Masti (2013). It is produced by Sameer Nair, Aman Gill, Ashok Thakeria, Markand Adhikari and Anand Pandit.

It features an ensemble cast of Riteish Deshmukh, Vivek Oberoi, Aftab Shivdasani, Shreyas Talpade, Urvashi Rautela, Shraddha Das, Mishti Chakraborty, Pooja Bose and Sanjay Mishra in the pivotal roles. Originally scheduled to release on 22 July 2016, the date was advanced to 15 July 2016 after a pirated copy of the film was reportedly leaked online. The censor board made 23 deletions from the film including some dialogue deletions and a complete scene and gave the film an A certificate.