Diasporic literature centres on the experiences of people all around the world who leave their homelands in search of â€-greener pasturesâ€- or are forced out of such homelands for various reasons. As a neo-colonialist tendency, the search for greener pastures is often perceived as the way out of the socio-political dilemma of 21st century Nigeria. To repudiate this â€-green pastureâ€- façade therefore, this dissertation explores issues of identity formation and the crisis of belonging in order to show that the Diasporic experience is a complex reality that amounts to double consciousness and/or identity crisis. In discussing Buchi Emecheta's Second Class Citizen (1974) and Chimamanda Ngozi Adichie's Americanah (2013) as Nigerian Diasporic Literature, this study adopts postcolonialism as the theoretical basis for the assessment of how the characters in the selected texts grapple with issues of race, identity, nostalgia and alienation in their new homes. The study proceeds on the assumption that Nigerian Diasporic Literature deserves critical attention since it expresses the relationship between literature and discourses like political instability, poverty, unemployment and other societal issues in Nigeria and the Diaspora where the various characters emigrate to. In this regard, the study examines the cause and effect relations of the diaspora experience in the texts under study and finds that immigrants who leave their country of origin in search of greener pastures are confronted and disillusioned by issues of racial discrimination and culture difference in the Western societies that they relocate to. The study also finds out that their experiences alienate them as the â€-other' and deprives them of a sense of belonging.