General support
Last Awarded In
2024
Median Grant
$2,500
Grant Range
$500 – $52,000
States & Territories
7 states
Prospective applicants should follow the published LOI procedure on the foundation's website and submit the Letter of Inquiry during the April 1–May 31 window, ensure 501(c)(3) eligibility, and present clear project- or capital-focused requests aligned with the foundation's common priorities (education, human services, youth, arts, health). Emphasize local Oklahoma impact where relevant, respect the one-request-per-year rule, and prepare supporting materials in case the LOI is approved for a full application.
Website
Source: Website — Mar 2026
Application Contact
Robert Glenn Rapp Foundation
Proposals are initiated through our online Grant Request Portal. Before submitting a full grant application, new & returning organizations must submit a Letter of Inquiry. Letters of Inquiry may be submitted from April 1 to May 31 by 5pm CST. Approved applicants may submit from the date of approval to August 31 by 5pm CST. The Foundation accepts one grant request per year, per organization.
Source: Zeffy Agent — Mar 2026, IRS Filing — 2024
