There is definitely a sequel to Delhi Belly on the cards according to filmmaker Abhinay Deo. Delhi Belly, an adult comedy, which released in 2011 and went on to be a super hit was written by Akshat Verma and directed by Deo.
We had thought of it (sequel). But the writer Akshat Verma is doing another film and I am busy with my own work. So hopefully in a few years we will be able to do a sequel.Abhinay Deo, Filmmaker (PTI)
Produced by Aamir Khan Productions, Delhi Belly featured Imran Khan, Vir Das and Kunal Roy Kapur among others.