This thesis investigates how Blackness is experienced, constructed, and reconstituted through intercultural encounters, using Chimamanda Ngozi Adichie’s Americanah as a case study. It explores how racial identity is not a fixed essence but a relational and historically contingent construct, shaped by intersecting structures of race, gender, class, and migration. The analysis focuses on key intercultural sites such as hair salons, romantic relationships, academic spaces, and digital platforms, as zones where power is negotiated and Blackness is both contested and asserted. The central research question guiding this study asks: How are power and Black identity negotiated and rearticulated through intercultural encounters in Americanah? To address this, the thesis brings together three critical frameworks: Intersectionality (Crenshaw, 1989), Black Feminist Thought (Collins, 2000; hooks, 1990), and Decolonial Theory (Mignolo, 2011), and applies a reflexive thematic analysis grounded in literary interpretation and critical intercultural communication. The findings reveal that Blackness in Americanah emerges through embodied resistance, diasporic estrangement, and expressive agency. Ifemelu’s journey from Nigeria to the United States and back, illustrates how race is learned, imposed, and re-signified across transnational spaces. Her hair, voice, and digital writings become epistemic tools through which she critiques dominant narratives and affirms alternative ways of knowing. These insights expose the power asymmetries embedded in neutral intercultural exchanges, revealing how identity is shaped by both systemic constraint and personal reclamation. By foregrounding lived experience, this thesis challenges liberal models of intercultural dialogue that ignore racialised hierarchies. It contributes to Intercultural Studies by centring affective, narrative, and relational dimensions of Black diasporic life, and by advancing a decolonial approach to literature as a site of knowledge production. The study calls for greater integration of Black feminist and decolonial epistemologies in theorising intercultural encounters.