The William and Flora Hewlett Foundation is a nonpartisan, private charitable foundation that advances ideas and supports institutions to promote a better world. For more than 50 years, the foundation has supported efforts to advance education for all, preserve the environment, support vibrant performing arts, strengthen Bay Area communities, make the philanthropy sector more effective, and foster gender equity and responsive governance around the world.

Today, it is one of the largest philanthropic institutions in the United States, awarding over $516 million in grants in 2021 to organizations across the globe to help people build better lives.