Duniya is a 1968 Hindi romantic thriller film written by K. A. Narayan and directed by T. Prakash Rao. The film starred Dev Anand, Vyjayanthimala in the lead with Balraj Sahni, Johnny Walker, Lalita Pawar, Prem Chopra, Sulochana Latkar, Madan Puri, Nana Palsikar, Achala Sachdev, Laxmi Chhaya, Jagdish Raj, Tun Tun, Brahm Bhardwaj and Pakistani actor Suresh as the ensemble cast. The film was produced by Amarjeet.The films score was composed by Shankar Jaikishan duo with lyrics provided by Hasrat Jaipuri, S. H. Bihari and Gopaldas Neeraj, edited by Shivaji Awdhut and was filmed by Faredoon A. Irani. The story revolves around three friends Amarnath, Gopal and his sister, Mala, how they face their problem in the life and how they realize from the problem in the rest of the story.