This paper examines gender (in)equalities within Nigerian Indigenous spiritualities, focusing on Igbo and Yoruba religious traditions as complex systems of cosmology, ritual practice, and moral authority. Rather than framing these traditions as either inherently egalitarian or patriarchal, the study approaches gender as a relational, symbolic, and negotiated category embedded in sacred narratives, ritual economies, and institutional arrangements. Drawing on anthropological, historical, and theological scholarship, the paper analyzes dual-sex systems and women's ritual authority in Igbo spirituality, alongside Yoruba configurations of sacred power embodied in male and female oriṣa, priesthood structures, and the ambivalent figure of àjẹ́. These frameworks reveal how spiritual potency is both gendered and destabilizing of rigid binaries, enabling women's authority while simultaneously regulating it through moral discourse and ritual control. The paper further considers how colonial intervention, Christian and Islamic encounters, and contemporary reinterpretations have reshaped indigenous gender logics, often narrowing previously flexible spiritual spaces. By situating Igbo and Yoruba traditions within broader debates on normativity, embodiment, and power, this contribution highlights Nigerian Indigenous spiritualities as dynamic sites where gendered hierarchies are produced, contested, and reconfigured in ongoing struggles for religious and social legitimacy.