Pierce Slinkard Foundation Inc

Florence & Gordon Holland Family Foundation

Hilton Head Island, SC

The Florence & Gordon Holland Family Foundation supports a varied mix of charitable causes, including veterans’ services, preservation, children’s welfare, research, and humanitarian aid, with past grants ranging from $3,000 to $6,500 and recent annual grants of about $212,500–$262,000. Its reported recipients are based in South Carolina and several other states; it gives only to preselected organizations and does not accept unsolicited requests.

Guest Family Ministries Inc

Broken Arrow, OK

Waters Charitable Foundation

Jenks, OK

In 2025, the foundation supported education and scholarships, social services and basic needs, health and medical research, and animal and wildlife organizations, with 81% of its grants going to Oklahoma and the rest to Florida, Washington, D.C., Illinois, and Texas. Grants ranged from $5,000 to $200,000, with a median of $15,000. It does not accept unsolicited requests and gives only to preselected charitable organizations.

The David E & Cassie L Temple Foundation

Tulsa, OK

The foundation funds organizations addressing basic educational and humanitarian needs, prioritizing those that encourage spiritual transformation, with a focus on children and families in the Tulsa metropolitan area. Its 2025 grants ranged from $550 to $75,000, with a median of $20,000; the profile does not state whether it accepts unsolicited requests.

TWL Foundation

Metairie, LA

Rita L Willis Foundation 1300-0002455

Tulsa, OK

The Tulsa-based Rita L. Willis Foundation supports a range of charitable organizations, including nature conservation and services for people experiencing homelessness or at risk. Its 2024 grants averaged about $709,000, though grant totals varied substantially by year. It gives only to preselected organizations and does not accept unsolicited requests.

The Grace Foundation

Tulsa, OK

The Cole Family Foundation

Owasso, OK

The Cole Family Foundation funded Oklahoma charities in areas including senior services, food assistance, homelessness, animal welfare, and higher education, typically giving $100–$1,000 (median $250). It terminated in 2021 after distributing its remaining assets and did not accept unsolicited requests.

The Morgan Family Foundation Inc

Lutherville, MD

The Morgan Family Foundation supports educational organizations, with 2023 grants ranging from $500 to $23,785 and a median of $2,000. It gave 94% of its 2023 grant dollars in Maryland and 6% in New Hampshire; it accepts requests by contact, asking for a program description and proof of 501(c)(3) publicly supported status.

Ralph and Frances McGill Foundation

Tulsa, OK

The Ralph and Frances McGill Foundation supports Oklahoma nonprofits across areas including health, human services, education, arts, and community programs. Its 2025 grants ranged from $1,000 to $50,000, with a median of $5,000. It accepts written requests describing a specific need, along with a current board list and proof of 501(c)(3) status; no deadline is stated.

H A & Mary K Chapman Charitable Trust

Tulsa, OK

The trust funds 501(c)(3) organizations working in areas such as education, health and human services, arts, community initiatives, and nature and wildlife, primarily in Tulsa, Oklahoma, and Colorado Springs, Colorado. Its 2023 grants ranged from $10,000 to $500,000, with a median of $30,000. It accepts an initial letter of inquiry; full proposals are by invitation.

The Hardesty Family Foundation Inc

Tulsa, OK

The Hardesty Family Foundation supports Oklahoma 501(c)(3) nonprofits in areas including arts, animal welfare, workforce development, mental health, recreation, and addiction recovery, with an emphasis on capital projects and needs in the Tulsa area. In 2025, grants ranged from $250 to $1.26 million, with a median of $15,000. It accepts applications by invitation only and does not accept unsolicited requests.