192,432+ foundations indexed

Grant Funder Directory

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19,337 results California
★Funder Assets
The O'brien Family Foundation$442K
The O'donnell Foundation$193K
The O&R Chun Foundation Inc$121K
The Oak Tree Philanthropic Foundation—
The Oakland Athletics Community Fund$3.9M
The Oakland Museum Womens Board$5.2M
The Oakland Public Education Fund$27.1M
The Obria Group Inc$1.4M
The Oddo Family Foundation Inc$160K
The Oder Family Foundation Inc$3.3M
The Ohana Foundation$3.6M
The Ohr Hakotel Foundation—
The Ojai Civic Association$1.4M
The Okinaka Foundation for Social and$68K
The Okun Family Foundation Inc$120K
The Old Oak Foundation$15.6M
The Oldfield Family Foundation$26K
The Oley Friends Foundation$2.1M
The Olgapuri Village Foundation$2.3M
The Olive Foundation$500K
The Olson Family Foundation$14K
The Oltmans Construction Co Foundation$812K
The Olukotun Family Foundation$198K
The Olympic Club$194.2M
The Omidyar Group Charitable Trust$10
The Ondulado Fund$32K
The Opaline Fund$422K
The Opportunity Foundation$138K
The Opportunity Fund$186K
The Opportunity Institute$114K
The Oprah Winfrey Charitable Foundation$172.0M
The Ora Lerman Charitable Trust$815K
The Orange County Endowment for—
The Orange Rotary Charitable Trust$169K
The Orchard Family Foundation$963K
The Ord Foundation$2K
The Orel Foundation$5K
The Organizer II Inc$3.9M
The OShea Foundation$5.8M
The Osherenko-young Foundation$654K

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About the Funder Directory

Grantable's Funder Directory provides detailed profiles for over 192,432 US foundations and grant-making organizations. Each profile includes financial data, grant histories, key people, and focus areas — all sourced from IRS Form 990-PF filings and enriched with Candid classification data.

Whether you're a nonprofit researching potential funders, a grant writer identifying new prospects, or a researcher analyzing philanthropic trends, our directory provides the information you need to make informed decisions about your fundraising strategy.

Foundations by Cause

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Foundations by Focus Area

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Foundations by State

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