| Charles E Smith Jewish Day School of Greater Washington Inc | 501(c)(3) | 1976 | $38.5 million | $70.4 million | 2025-06 |
| Ivymount School Inc | 501(c)(3) | 1980 | $22.1 million | $16.4 million | 2025-06 |
| Montgomery College Foundation Inc | 501(c)(3) | 1983 | $9.8 million | $112.8 million | 2025-06 |
| Green Acres School Inc | 501(c)(3) | 1938 | $7.2 million | $12.2 million | 2025-06 |
| Association for Molecular Pathology Inc | 501(c)(3) | 1999 | $6.3 million | $15.5 million | 2024-12 |
| Association of Schools and Colleges of Optometry Inc | 501(c)(3) | 1975 | $4.1 million | $13.3 million | 2025-06 |
| Montgomery County Public Schools Educational Foundation Inc | 501(c)(3) | 1990 | $3.3 million | $13.3 million | 2025-06 |
| Montgomery Coalition for Adultenglish Literacy Inc | 501(c)(3) | 2008 | $2.6 million | $542,014 | 2025-06 |
| Collegetracks Inc | 501(c)(3) | 2006 | $2.6 million | $546,170 | 2025-06 |
| Montgomery County Childrens Opportunity Alliance Inc | 501(c)(3) | 2022 | $2.4 million | $690,504 | 2025-06 |
| Alef Bet Montessori School Inc | 501(c)(3) | 2007 | $2.3 million | $3.2 million | 2025-07 |
| Primary Montessori Day School | 501(c)(3) | 1999 | $2.2 million | $2.1 million | 2025-07 |
| American Association of Colleges of Podiatric Medicine | 501(c)(3) | 1989 | $1.5 million | $2.1 million | 2025-06 |
| Classroom 2 Community Inc | 501(c)(3) | 1968 | $1.4 million | $681,296 | 2025-06 |
| Ivymount Outreach Programs Inc | 501(c)(3) | 2006 | $1 million | $420,179 | 2025-06 |
| International Papillomavirus Society Inc | 501(c)(3) | 2002 | $901,694 | $1.2 million | 2025-12 |
| Pinkney Innovation Complex for Science & Technology at Montgomery | 501(c)(3) | 2012 | $795,306 | $11.6 million | 2025-06 |
| Society for Research On Educational Effectiveness | 501(c)(3) | 2010 | $765,553 | $533,541 | 2025-12 |
| The Ivymount Foundation Inc | 501(c)(3) | 2005 | $685,142 | $8.5 million | 2025-06 |
| Friends of Rabbinical Academy for Advanced Jewish Studies Kol Simcha | 501(c)(3) | 2006 | $585,826 | $1.2 million | 2024-12 |
| Rockville Community Nursery School Incorporated | 501(c)(3) | 1965 | $542,935 | $536,188 | 2025-06 |
| Hope Chinese School Inc | 501(c)(3) | 1998 | $398,354 | $586,276 | 2025-12 |
| Teach-The-World Foundation Inc | 501(c)(3) | 2019 | $361,071 | $143,947 | 2025-12 |
| Rockville Presbyterian Cooperative Nursery School | 501(c)(3) | 2000 | $282,742 | $288,688 | 2025-06 |
| Alsabeel Community Center Inc | 501(c)(3) | 2023 | $207,862 | $1.4 million | 2025-12 |
| New Mexico Society of Clinical Oncology | 501(c)(3) | 1996 | $207,711 | $353,318 | 2024-12 |
| Create Calm Inc | 501(c)(3) | 2016 | $142,172 | $46,096 | 2025-12 |
| Aspen Hill Nursery School Inc | 501(c)(3) | 1961 | $136,719 | $87,244 | 2025-06 |
| Unicare Medical Solutions Inc | 501(c)(3) | 2017 | $125,224 | $40,755 | 2024-12 |
| Athlete Amplifier Foundation | 501(c)(3) | 2025 | $95,432 | $138,332 | 2025-12 |
| Society for Muscle Biology Inc | 501(c)(3) | 2003 | $94,828 | $109,860 | 2025-12 |
| Parent Booster USA Inc | 501(c)(3) | 2005 | $84,570 | $66,930 | 2025-06 |
| Creative Capital Impact Organization | 501(c)(3) | 2020 | $72,128 | $1.6 million | 2024-12 |
| RMHS Athletic Booster Club Inc | 501(c)(3) | 2014 | $67,380 | $41,622 | 2025-06 |
| Maryland School for Jewisheducation Inc | 501(c)(3) | 2008 | $65,942 | $174,421 | 2025-05 |
| Discover Steam Incorporated | 501(c)(3) | 2020 | $65,163 | $65,321 | 2025-12 |
| Sakura Educational Exchanges USA Inc | 501(c)(3) | 1991 | $52,926 | $1.1 million | 2025-03 |
| Action Information | 501(c)(3) | 2022 | $50,000 | $34,638 | 2024-12 |
| Wootton Booster Club Inc | 501(c)(3) | 2015 | $23,183 | $185,797 | 2025-07 |
| Parallel Hope Schools Inc | 501(c)(3) | 2019 | $1,326 | $8,083 | 2026-06 |
| Sander Cohen Scholarship Foundation Inc | 501(c)(3) | 2021 | $1,088 | $1 | 2025-12 |
| Fu Jen Catholic University Greater Washington DC Alumni Association | 501(c)(3) | 2014 | $600 | $3,157 | 2025-12 |
| Janki Ganju Educational Fund Inc | 501(c)(3) | 1996 | $300 | $10,137 | 2025-12 |
| A Helping Horn Inc | 501(c)(3) | 2024 | $0 | $0 | 2025-12 |
| Accomplished Literacy Learners | 501(c)(3) | 2021 | $0 | $0 | 2025-12 |
| Advanced Global Education Inc | 501(c)(3) | 2010 | $0 | $0 | 2025-07 |
| American Bootes Astronomical Society Incorporated | 501(c)(3) | 2024 | $0 | $0 | 2025-12 |
| Annabell Center for Life-Long Learn Ing Incorporated | 501(c)(3) | 2025 | | | |
| Asm Mid-Potomac Chapter Inc | 501(c)(3) | 2010 | $0 | $0 | 2025-12 |
| Association for Education Fairness | 501(c)(3) | 2019 | $0 | $0 | 2025-06 |
| Association of Chairs of Departments of Physiology Inc | 501(c)(3) | 1998 | $0 | $0 | 2025-12 |
| Beth Messiah Congregation Inc | 501(c)(3) | 1974 | | | |
| Black and Brown Coalition for Educational Equity & Excellence in | 501(c)(3) | 2023 | $0 | $0 | 2023-12 |
| Blockchain Industry Association of North America Inc | 501(c)(3) | 2023 | | $1 | 2025-12 |
| Boamah Weikel Foundation | 501(c)(3) | 2018 | $0 | $0 | 2024-12 |
| Board 12 Foundation | 501(c)(3) | 2024 | $0 | $0 | 2025-12 |
| Bright Stars Lanka Foundation LTD | 501(c)(3) | 2026 | | | |
| Brookhaven Pta | 501(c)(3) | 2025 | | | |
| Business Academy Inc | 501(c)(3) | 2021 | $0 | $0 | 2025-12 |
| Cafe Montgomery MD | 501(c)(3) | 2019 | $0 | $0 | 2025-12 |
| Capital Ai Club Inc | 501(c)(3) | 2025 | $0 | $0 | 2025-12 |
| Carenthic Global Inc | 501(c)(3) | 2026 | | | |
| Chinese Bible Church of Marylandchinese School | 501(c)(3) | 2008 | $0 | $0 | 2025-12 |
| Cleft Lip Warriors Inc | 501(c)(3) | 2024 | | | |
| Collaborative Dispute Resolution Professionals Inc | 501(c)(3) | 2007 | $0 | $0 | 2026-05 |
| Cornell University Alpha Kappa Delta Phi Alumni Association | 501(c)(3) | 2017 | $0 | $0 | 2025-12 |
| Defiance FC Inc | 501(c)(3) | 2016 | $0 | $0 | 2026-05 |
| Enhancing Learning and Play | 501(c)(3) | 2018 | $0 | $0 | 2025-12 |
| Eternal Scholars Foundation | 501(c)(3) | 2026 | | | |
| Execute Big Inc | 501(c)(3) | 2020 | $0 | $0 | 2026-02 |
| Forage Center for Peacebuilding and Humantarian Education Inc | 501(c)(3) | 2015 | $0 | $0 | 2025-12 |
| Foundation for African American Education Inc | 501(c)(3) | 2016 | $0 | $0 | 2025-12 |
| Friends of Usu Inc | 501(c)(3) | 2005 | $0 | $0 | 2025-09 |
| Fullness Foundation | 501(c)(3) | 2022 | $0 | $0 | 2025-12 |
| Gaithersburg-Rockville Alumni Chapter Kappa Alpha Psi Fraternity | 501(c)(7) | 2016 | $0 | $0 | 2025-09 |
| Ganga Library Inc | 501(c)(3) | 2014 | $0 | $0 | 2025-12 |
| Girlz in Charge | 501(c)(3) | 2021 | $0 | $0 | 2025-12 |
| HW Global Foundation Inc | 501(c)(3) | 2014 | $0 | $0 | 2025-12 |
| Hardy Lane Foundation Inc | 501(c)(3) | 2012 | | $11.3 million | 2024-12 |
| Hazardous Materials Society | 501(c)(3) | 2019 | | $9,833 | 2024-12 |
| House of Kefalos Inc | 501(c)(3) | 2014 | $0 | $0 | 2025-06 |
| Idca Global Foundation | 501(c)(3) | 2026 | $0 | $1 | 2025-12 |
| Inclusion Education Services Inc | 501(c)(3) | 2019 | $0 | $0 | 2026-06 |
| Institute for Global Education Equality of Opportunity & Prospert | 501(c)(3) | 2007 | | $681,698 | 2024-12 |
| Institute of Tai-Chi Arts | 501(c)(3) | 2004 | $0 | $0 | 2025-12 |
| Integirls MD Inc | 501(c)(3) | 2022 | $0 | $0 | 2023-12 |
| International Palaeontological Association | 501(c)(3) | 2001 | $0 | $0 | 2024-12 |
| Ioch Inc | 501(c)(3) | 2022 | $0 | $0 | 2024-12 |
| Ispar Foundation Inc | 501(c)(3) | 2011 | $0 | $0 | 2025-12 |
| Ivymount Corporation | 501(c)(3) | 2014 | $0 | $1,452 | 2025-06 |
| Jerusalem Peace Institute Inc | 501(c)(3) | 2024 | | | |
| Joseph Patrick Memorial FDN Inc | 501(c)(3) | 2003 | $0 | $0 | 2024-05 |
| Language Learning and Testing Foundation Incorporated | 501(c)(3) | 2004 | $0 | $0 | 2025-12 |
| Makuyu Education Initiative Inc | 501(c)(3) | 2013 | $0 | $0 | 2024-12 |
| Maryland Youth Pipe Band Inc | 501(c)(3) | 2014 | $0 | $0 | 2025-08 |
| Melchizedek Education and Research Institute | 501(c)(3) | 2017 | $0 | $0 | 2025-12 |
| Montessori Schools of Maryland | 501(c)(3) | 2011 | $0 | $0 | 2025-12 |
| Montgomery County Sister Cities Inc | 501(c)(3) | 2010 | $0 | $0 | 2025-12 |
| National Mall Coalition | 501(c)(3) | 2003 | $0 | $0 | 2025-12 |
| National Taiwan Univ Alumni Assoc in the Washington-Baltimore Area | 501(c)(3) | 2015 | $0 | $0 | 2025-12 |
| National Tsing Hua University Alumni Association of Washington D | 501(c)(3) | 2020 | $0 | $0 | 2025-12 |
| Neuromotion Inc | 501(c)(3) | 2025 | $0 | $0 | 2025-12 |
| Northwood Educational Foundation | 501(c)(3) | 2016 | $0 | $0 | 2024-05 |
| Opportunity Maryland Inc | 501(c)(4) | 2024 | $0 | $0 | 2025-12 |
| Overseas Young Chinese Forum | 501(c)(3) | 1999 | $0 | $0 | 2025-12 |
| Peking University Alumni Association Inc | 501(c)(3) | 1998 | $0 | $0 | 2025-04 |
| Philippine American Academy of Science and Engineering | 501(c)(3) | 2020 | $0 | $0 | 2025-12 |
| Pivotskill Initiative | 501(c)(3) | 2026 | | | |
| Proffitt Brothers Foundation Inc | 501(c)(3) | 2019 | | $4,474 | 2024-12 |
| Project Parallax Inc | 501(c)(3) | 2026 | | | |
| Pta Delaware Congress | 501(c)(3) | 1971 | $0 | $0 | 2026-06 |
| Pta Delaware Congress | 501(c)(3) | 1971 | $0 | $0 | 2025-06 |
| Radiant Futures Academy | 501(c)(3) | 2026 | | | |
| Rams Club Football Incorporated | 501(c)(3) | 2007 | $0 | $0 | 2025-12 |
| Reza Chini Foundation Inc | 501(c)(3) | 2005 | $0 | $0 | 2025-12 |
| Right2quality Foundation Inc | 501(c)(3) | 2021 | $0 | $0 | 2025-12 |
| Rise Circle Foundation Inc | 501(c)(3) | 2026 | $0 | $0 | 2025-12 |
| Risewell Crossing Foundation Inc | 501(c)(3) | 2026 | | | |
| Rock Terrace Parent Teacher Group | 501(c)(3) | 2022 | $0 | $0 | 2025-06 |
| Rocket Robotics Booster Association Inc | 501(c)(3) | 2025 | $0 | $0 | 2026-06 |
| Scholar Athlete Fund Inc | 501(c)(3) | 2013 | $0 | $3,733 | 2024-12 |
| Sgo of the Jewish Community of DC | 501(c)(3) | 2026 | | | |
| Sgo of the Jewish Community of Nova | 501(c)(3) | 2026 | | | |
| Solateach Inc | 501(c)(3) | 2025 | $0 | $0 | 2025-12 |
| Solomons House | 501(c)(3) | 2026 | | | |
| St Patricks Grandparents Club Inc | 501(c)(3) | 2018 | $0 | $0 | 2025-12 |
| Stemm Prep Academy Incorporated | 501(c)(3) | 2026 | $0 | $0 | 2025-12 |
| Stepping Stone Tutoring Inc | 501(c)(3) | 2021 | $0 | $0 | 2025-12 |
| The Literacy Initiative Inc | 501(c)(3) | 2026 | | | |
| Tsinghua Alumni Association in Greater Washington DC Inc | 501(c)(3) | 2016 | $0 | $0 | 2025-12 |
| U S N R C Child Development Center Inc | 501(c)(3) | 1993 | $0 | $0 | 2025-12 |
| Uet-Lahore Alumni Association America Inc | 501(c)(3) | 1997 | $0 | $0 | 2025-12 |
| University of Organic Agriculture | 501(c)(3) | 2023 | $0 | $1 | 2023-12 |
| Viet My Cultural Center | 501(c)(3) | 2023 | $0 | $0 | 2025-08 |
| Wise Thought Foundation | 501(c)(3) | 2025 | | | |
| Youmax Incorporated | 501(c)(3) | 2026 | | | |