World Vision is accelerating access to equitable water, sanitation, and hygiene (WASH) services for all by deepening our focus on the most vulnerable, especially in fragile and extremely fragile contexts. We have long been committed to gender equality and social inclusion (GESI) within the WASH sector, recognizing the unique burdens that poor WASH services place on women, girls, and marginalized groups such as the elderly, indigenous groups, people living with disabilities (PLWDs), and people living in fragile contexts. Inadequate WASH services increase their risk of injury, illness, harassment, and violence, among other issues. The purpose of the GESI Accelerator Fund is to identify, refine, implement, and document cross-cutting approaches that elevate the roles of women and marginalized groups as WASH leaders. While World Vision’s WASH Program emphasizes access and participation for women, girls, and PLWDs, the GESI WASH Accelerator Fund seeks to deepen our focus on these groups to test and document GESI-transformative WASH approaches.