The Henry Mayo Newhall Foundation is a non-profit organization which supports charitable, cultural and agricultural programs in specific areas of California.

The San Francisco-based Foundation was created in 1963 by fourth-generation descendants of California entrepreneur and pioneer Henry Mayo Newhall.  The Foundation's endowment is the result of contributions from members of the Newhall family.

The Foundation's purpose is to fund projects that exemplify the life and goals of Henry Mayo Newhall, as summarized in its mission statement: "To improve the cultural and social life within the geographical areas associated with the career and legacy of California pioneer Henry Mayo Newhall." 

Since its inception, the Foundation has awarded grants to more than 100 organizations in communities where Mr. Newhall originally established his businesses, or where those enterprises are active today.  The Foundation has focused its grant-giving on projects in the San Francisco area (where Mr. Newhall founded his first business ventures), the Valencia/Santa Clarita area in northern Los Angeles County (location of the Newhall Ranch), and the Santa Maria area on the Central California coast (the site of his first large rancho).

The Foundation Board meets on a regular basis to review and approve grant requests.