Rainee Barkhorn Charitable Foundation

J Watumull Fund

Honolulu, HI

J Watumull Fund supports public charities and schools across areas including arts, education, health, community services, and child welfare; most of its 2024 grant dollars went to Hawaii. Its grants ranged from $500 to $50,000, with a median of $2,000. It accepts applications anytime.

Altres Foundation

Honolulu, HI

ALTRES Foundation funds community-based nonprofits, with recent grants supporting education, youth, community programs, capacity building, and capital improvements. Its 2025 grants ranged from $40 to $200,000, with a median of $500; most funding went to Hawaiʻi, with some awards in Texas and Maryland. The filing says giving is not restricted to preselected organizations and lists a contact for applying, but does not specify an application process or deadlines.

Cooke Foundation Limited

Honolulu, HI

The Cooke Foundation supports Hawaiʻi nonprofits working in arts, culture and humanities, education, environment, and human services. In 2025, grants ranged from $3,150 to $200,000, with a median of $20,000; it funds organizations in Hawaiʻi. It accepts online applications through a letter-of-interest process, but unsolicited proposals outside its priority areas are not considered.

Enterprise Holdings Foundation

Saint Louis, MO

Enterprise Holdings Foundation supports nonprofits in health, education, arts, disaster relief, reforestation, hunger relief, and community equity, with an emphasis on organizations actively supported by Enterprise employees and their families. Its reported grants range widely: 2024 giving averaged about $7,700 across 9,499 grants, while the foundation also offers awards of up to $40,000; it supports communities where Enterprise operates worldwide. Unsolicited requests are accepted at any time, but eligible applications must be submitted by an Enterprise team member or their spouse or domestic partner on behalf of a nonprofit they actively support.

Aloha United Way Inc

Honolulu, HI

Aloha United Way funds Hawaiʻi community organizations working on health, education, financial stability, housing, basic needs, family support, and related services, with most funding focused on Oʻahu. Its 2024 grants ranged from $5,852 to $1,858,647, with a median of $24,421; it offers specific application cycles, but the profile does not state whether it accepts unsolicited requests.

Padosi Foundation

Portland, OR

The Padosi Foundation supports organizational needs and scholarship assistance, with 2025 grants ranging from $1,000 to $50,000. Recent grants went to organizations in California, Hawaii, and Washington, DC; it funds only preselected charities and does not accept unsolicited requests.

Joseph and Vera Zilber Family

Milwaukee, WI

The Foundation funds basic needs, economic stability, nonprofit-sector support, and founder-initiated partnerships, including general operations, programs, capacity building, and capital projects. It focuses on Milwaukee—especially selected neighborhoods—and Hawaii, particularly Oahu; its 2025 median grant was $7,500, though awards ranged widely. It does not accept unsolicited requests; grants are by invitation only.

Harold KL Castle Foundation

Kailua, HI

The Harold K.L. Castle Foundation funds primarily project-based work in public education, nearshore marine conservation, climate resilience, and Windward Oʻahu communities, mainly serving people in Hawaiʻi. In 2024, grants ranged from $500 to $550,000, with a median of $25,000. First-time applicants are directed to submit an online inquiry; the profile does not state whether unsolicited requests are accepted.

The Michael B Wood Foundation

Honolulu, HI

Tradewind Group Foundation

Honolulu, HI

The Tradewind Group Foundation supports education, workforce development, housing, health, arts, youth, culture, and other community needs in Hawai‘i. Its 2025 grants ranged from $86 to $100,510, with a median of $5,000. It accepts requests by letter stating the request and the organization’s purpose; the filing says giving is not limited to preselected organizations.

Pikake Foundation Inc

San Francisco, CA

The foundation supports a varied mix of arts, cultural, civic, environmental, and other organizations, with most 2024 grant dollars going to Massachusetts and smaller shares to Hawaii, California, Washington, DC, and New York. Grants ranged from $500 to $1,407,049, but the median was $2,000; applicants must submit written information about their organization and purpose for review.

Hawaii Realtors Charitable Foundation

Honolulu, HI

The Hawai‘i REALTORS® Charitable Foundation supports community efforts addressing food insecurity and providing housing for people in need, including disaster relief and food assistance, primarily in Hawai‘i. Its 2024 grants ranged from $200 to $3,000, with a median of $2,500. It offered applications for Maui wildfire housing assistance, but the profile does not state whether it accepts unsolicited requests generally.