Happy Bhag Jayegi marks the Bollywood debut of Pakistani actor Momal Sheikh, who was cast as Deol's fiancée. The production team approached Sheikh's father Javed Sheikh for a part in the film and sought his help with casting the role of Zoya. After auditioning, the actors suggested by Javed were unsuitable; the team then contacted Momal, who read through the script multiple times before agreeing to work on the production.[9] Ali Fazal was offered the role of Guddu, an unsuccessful musician and Penty's love interest in the film.