The Weingart Foundation is a California-based grantmaking organization supporting a number of left-of-center organizations, mostly in the state. Ben Weingart, a Los Angeles-area property developer, created the foundation in 1951, and when Weingart died in 1980, he left much of his estate to the Foundation.

The Weingart Foundation was one of the original donors to fund the creation of the California Black Freedom Fund (CBFF) at the end of 2020. The CBFF is a left-of-center grantmaking organization that funds California-based groups that seek to eliminate what it perceives as systemic racism. It used funding from the original donors to provide grants that went towards advocacy for targeted redistricting, so-called racial equity, and the firing of who it determines are racist police officers. ^[1]