This paper explores the intersection of colonialism, masculinity, and queerness in Junot Díaz’s The Brief Wondrous Life of Oscar Wao. Through a decolonial lens, it examines how Díaz critiques the lingering effects of colonialism and dictatorship on Dominican identity, particularly through the ‘fukú’ curse—a symbol of intergenerational trauma. The paper argues that the queering of heterosexuality in the novel challenges rigid gender norms, where Oscar’s nonconformity and Yunior’s conflicted hypermasculinity expose the limitations of Dominican masculinity shaped by colonial rule. Set against the backdrop of the Dominican Republic’s tropical landscapes and violent history, Oscar’s and Yunior’s narratives highlight the broader struggle between individual authenticity and societal conformity. Díaz’s use of magical realism and transcultural storytelling amplifies this decolonial critique, revealing how colonial legacies continue to shape gender and identity in the post-colonial world. By analyzing the characters’ resistance to heteronormative pressures and their individual journeys, the paper situates The Brief Wondrous Life of Oscar Wao as a significant exploration of queering as a form of decolonial resistance, reconsidering the lasting impact of colonial oppression on cultural and gender identities.