Nationalism as a concept can be analysed through myriad dimensions and contexts. In this paper we analyse nationalism through multiple lenses of globalization, multiculturalism and decolonization. The term “diaspora” can be used as theoretical framework to critique the concept of pure and fixed home, place and notion. Diaspora writers used the term ‘diaspora’ to interrogate the hegemonic nationalist construction of home, space and cultural and national identity. The literature produced by Diaspora writers- Amitav Ghosh, Bharti Mukherjee and Salman Rushdie signifies the exploration of the possibility of redefining the Nation in their individual way. This has proved immensely popular in western literary criticism and the critical theories established by Derrida, Foucoult, Homi Bhabha and Stuart Hall. Literature of diaspora examines Nationhood as a socio-political, cultural construct in the post colonial perspective. Diaspora writers historicize their existence in todays world without dismissing the impact of colonialism or understanding the threat of neo-colonial projects.