| College Park Cavalier Band Booster ClubThe Woodlands | Form 990 | $490,774FY2026 |
| South Texas Community College Education FoundationMcAllen | Form 990 | $489,619FY2025 |
| Vocation MinistryHouston | Form 990 | $488,482FY2024 |
| Women Empowering Women for the Next Generation MinistriesDallas | Form 990 | $487,651FY2025 |
| Randall High School Athletic Booster ClubAmarillo | Form 990 | $485,745FY2024 |
| Sinclair Elementary PTOHouston | Form 990 | $483,794FY2025 |
| DKG International Educators FoundationAustin | Form 990 | $481,767FY2025 |
| Texas Christian Homeschool PromDallas | Form 990 | $477,431FY2025 |
| Heathers Old Skool VillageLake Worth | Form 990 | $476,664FY2025 |
| Star Sponsorship Program IncFort Worth | Form 990 | $476,612FY2025 |
| Folds of Honor FoundationAustin | Form 990 | $476,127FY2024 |
| National Association of Search and Rescue IncThe Woodlands | Form 990 | $475,413FY2024 |
| Liberty Hill Isd Education FoundationLiberty Hill | Form 990 | $475,202FY2025 |
| Florida Emergency Medicine Teaching Alliance IncDallas | Form 990 | $474,929FY2024 |
| C 60 IncHouston | Form 990 | $474,784FY2025 |
| Father Yermo Schools Capital Campaign IncEl Paso | Form 990 | $472,658FY2024 |
| Bridgeland Theatre Arts Booster ClubCypress | Form 990 | $472,096FY2025 |
| Lyric Preforming Arts CompanyBrownwood | Form 990 | $469,874FY2024 |
| Arlington Heights High School All Sports Booster Club IncFort Worth | Form 990 | $469,732FY2025 |
| Yucca Blossom MontessoriMidland | Form 990 | $467,853FY2025 |
| Achieving Community Task SuccessfullyHouston | Form 990 | $467,526FY2024 |
| Nacogdoches Isd Education FoundationNacogdoches | Form 990 | $466,575FY2025 |
| Marble Falls Isd Education FoundationMarble Falls | Form 990 | $466,368FY2025 |
| Parent Booster USA IncAustin | Form 990 | $465,008FY2025 |
| Natural WomanhoodSan Antonio | Form 990 | $464,768FY2024 |
| Greenwood Isd Education FoundationMidland | Form 990 | $464,729FY2025 |
| Metroplex Tamil AcademyPlano | Form 990 | $463,505FY2024 |
| Core-Mark Families FoundationWestlake | Form 990 | $463,198FY2024 |
| WonderworksHouston | Form 990 | $461,395FY2025 |
| Pastors for Texas ChildrenFort Worth | Form 990 | $461,193FY2025 |
| Pivot Leadership GroupAustin | Form 990 | $461,009FY2025 |
| Texas Bar CollegeAustin | Form 990 | $460,960FY2025 |
| Conroe Isd Education FoundationConroe | Form 990 | $458,277FY2025 |
| Electric Distribution Exchange Conference Host Committee IncAustin | Form 990 | $457,002FY2025 |
| Rockwall High School Orange Wave Band BoostersRockwall | Form 990 | $456,988FY2023 |
| Cedar Park High School Band BoostersCedar Park | Form 990 | $456,661FY2025 |
| Southwest Independent School District Education FoundationSan Antonio | Form 990 | $456,511FY2025 |
| Wex FoundationSan Antonio | Form 990 | $455,757FY2024 |
| International Brangus Breeders FoundationCollege Station | Form 990 | $455,495FY2025 |
| Mid-South Synergy Charitable Foundation IncNavasota | Form 990 | $455,429FY2025 |
| Santa Fe Texas Education FoundationSanta Fe | Form 990 | $455,348FY2025 |
| VELAAustin | Form 990 | $454,877FY2025 |
| Petite Ecole Internationale IncAustin | Form 990 | $454,037FY2025 |
| Kingwood All Sports Booster Club IncKingwood | Form 990 | $453,194FY2024 |
| Midway Isd Education FoundationWoodway | Form 990 | $451,817FY2025 |
| Cypress Woods Band BoosterassociationCypress | Form 990 | $451,749FY2025 |
| American School of Gas Measurement TechnologyHouston | Form 990 | $448,988FY2025 |
| National Association of Corporate DirectorsHouston | Form 990 | $446,614FY2024 |
| Mariposa Family Learning CenterAustin | Form 990 | $446,118FY2025 |
| Seven Lakes High School Athletic Booster ClubKaty | Form 990 | $445,911FY2026 |