This diagnostic report offers a comprehensive assessment of the WFID Partnership's work from 2019 to 2022 with public, private, and civil sector financial inclusion stakeholders in Nigeria.  It shows that If interventions are not taken at the regulatory and industry levels, the gender gap in Nigeria’s financial access will persist—and possibly widen—in the future. On the other hand, it reveals that the central bank and other data-aggregating institutions have a strong appetite for strengthening the quality of supply-side data and using this data to drive women’s financial inclusion and underpin policy design that will reverse this trend and tap into the large opportunity for serving Nigerian women who are under-served or in the informal economy.