Sonu Ke Titu Ki Sweety (transl. Sonu's Titu's Sweety), also abbreviated as SKTKS, is a 2018 Indian Hindi-language romantic comedy film written and directed by Luv Ranjan. Produced by Luv Films and T-Series Films, the film was written by Luv Ranjan and Rahul Mody and edited by Akiv Ali. It stars Kartik Aaryan, Nushrat Bharucha and Sunny Singh. The film was released theatrically on 23 February 2018.

Upon release, Sonu Ke Titu Ki Sweety became a surprise blockbuster and broke several box-office records for a low budget film with no established stars. It entered the 100 Crore Club in India net. The film grossed ₹152–156 crore in its lifetime theatrical run, emerging as a huge box office success. It is one of the highest-grossing Bollywood films of 2018.