| Impactassets Inc | 501(c)(3) | 2009 | $680.3 million | $3.00 billion | 2024-12 |
| So What Else Inc | 501(c)(3) | 2010 | $33.8 million | $2.5 million | 2024-12 |
| Yellow Ribbon Fund Inc | 501(c)(3) | 2006 | $3 million | $3 million | 2026-02 |
| Journey for Good Foundation Inc | 501(c)(3) | 2015 | $2.9 million | $930,617 | 2025-12 |
| Friends of Barker Inc | 501(c)(3) | 1996 | $1.2 million | $17.4 million | 2024-12 |
| American Friends of Justifi Inc | 501(c)(3) | 2019 | $1.2 million | $21,947 | 2026-02 |
| Just Tryan It Inc | 501(c)(3) | 2010 | $607,571 | $589,557 | 2025-12 |
| Womens Microfinance Initiative Corporation | 501(c)(3) | 2008 | $474,681 | $333,550 | 2025-12 |
| Thisisplace Foundation | 501(c)(3) | 2020 | $432,984 | $137,012 | 2024-12 |
| The Lymphatic Malformation Institute | 501(c)(3) | 2012 | $294,067 | $365,332 | 2024-12 |
| Giving Square | 501(c)(3) | 2018 | $287,134 | $172,084 | 2025-12 |
| Impact100 DC | 501(c)(3) | 2020 | $223,423 | $274,855 | 2024-12 |
| Nancy Campbell World Endowment Inc | 501(c)(3) | 2024 | $153,896 | $5,124 | 2025-12 |
| Kindworks Inc | 501(c)(3) | 2009 | $144,219 | $141,614 | 2024-12 |
| Bethesda Chevy Chase Rotary Club Foundation Inc | 501(c)(3) | 2019 | $57,181 | $397,883 | 2025-06 |
| John M Kamya Foundation | 501(c)(3) | 2014 | $56,679 | $8,579 | 2025-12 |
| Friends of Westbrook School Foundation Inc | 501(c)(3) | 1999 | $37,673 | $69,935 | 2025-12 |
| Syed Mohamed and Sharifah Zaitun Albukhary Waqf | 501(c)(3) | 2003 | $29,105 | $215,391 | 2025-12 |
| Edes Home Foundation | 501(c)(4) | 1999 | $25,949 | $498,000 | 2025-12 |
| Roya & Ilyas Foundation | 501(c)(3) | 2024 | $2,500 | $2,500 | 2024-12 |
| Cordes Foundation | 501(c)(3) | 2025 | $1,200 | $10.5 million | 2024-12 |
| 1000 Urban Scholars | 501(c)(3) | 2014 | | $190 | 2025-12 |
| 2004 Quartner Family Charitable Trust | 501(c)(3) | 2005 | | $1.7 million | 2024-12 |
| A Chance Fund Inc | 501(c)(3) | 2005 | | $5.1 million | 2024-12 |
| Adames Foundation | 501(c)(3) | 2019 | | $9.4 million | 2024-12 |
| Adler Family Foundation Inc | 501(c)(3) | 1998 | | $4.4 million | 2025-12 |
| Adrian and Betsy Gonzalez Foundation | 501(c)(3) | 2011 | | $824,451 | 2024-12 |
| Akinkugbe Foundation Inc | 501(c)(3) | 2022 | | $1 | 2025-12 |
| Alan and Amy Meltzer Family Foundation Inc | 501(c)(3) | 1998 | | $10.4 million | 2024-12 |
| Albert and Shirley Small Family Foundation | 501(c)(3) | 2022 | | $13.9 million | 2025-12 |
| Amc World Foundation Inc | 501(c)(3) | 2016 | | $1 | 2025-12 |
| Ameen Rihani Organization Inc | 501(c)(3) | 1999 | | $173,107 | 2025-12 |
| Assoc of Bolivian Women of the Washington Metropolitan Area Inc | 501(c)(3) | 1999 | $0 | $0 | 2025-12 |
| Aufrichtig Foundation | 501(c)(3) | 2010 | | $5.7 million | 2025-12 |
| Aus-Usa Foundation | 501(c)(3) | 2003 | | | |
| Baier Foundation Inc | 501(c)(3) | 2015 | | $35,308 | 2024-12 |
| Baker Merine Family Foundation Inc | 501(c)(3) | 2002 | | $1.5 million | 2024-12 |
| Bill and Donna Marriott Foundation Inc | 501(c)(3) | 2023 | | $199,832 | 2025-12 |
| Carl & Nancy Gewirz Fund Inc | 501(c)(3) | 1985 | | $8.9 million | 2025-11 |
| Clark Charitable Foundation Inc | 501(c)(3) | 1987 | | $447.1 million | 2024-12 |
| Clearview Foundation | 501(c)(3) | 2016 | | $144,219 | 2025-12 |
| Cornell Douglas Foundation Inc | 501(c)(3) | 2006 | | $63.9 million | 2025-12 |
| D J McManus Foundation Inc | 501(c)(3) | 2000 | | $23.6 million | 2024-12 |
| Daba Fund | 501(c)(3) | 2019 | | $13.2 million | 2025-12 |
| David M Schwarz Architects Charitable Foundation Inc | 501(c)(3) | 2010 | | $927,904 | 2025-09 |
| David Raymond Price Foundation | 501(c)(3) | 2004 | | $306,617 | 2025-12 |
| David and June Trone Family Foundation | 501(c)(3) | 2011 | | $12.7 million | 2025-06 |
| De Beaumont Foundation Inc | 501(c)(3) | 1999 | | $163.5 million | 2024-12 |
| Dear Foundtion Inc | 501(c)(3) | 2023 | | $1.9 million | 2024-12 |
| Deck Foundation | 501(c)(3) | 2018 | | $23.9 million | 2025-12 |
| Declaration of Trust for the Morgan and Belle Obrien Foundation | 501(c)(3) | 1996 | | $108,877 | 2025-06 |
| Diana Davis Spencer Foundation | 501(c)(3) | 2007 | | $1.35 billion | 2024-12 |
| District Sample Sale Foundation Inc | 501(c)(3) | 2013 | $0 | $0 | 2025-06 |
| Dockser Family Foundation Inc | 501(c)(3) | 1995 | | $1.7 million | 2024-12 |
| Durga Dutt Kapilashrami Smark Sanskrit Mahavidyalaya Corporation | 501(c)(3) | 2009 | $0 | $0 | 2025-12 |
| Eacho Family Foundation | 501(c)(3) | 1998 | | $4.1 million | 2025-12 |
| Eakin Family Foundation | 501(c)(3) | 2015 | | $396,096 | 2024-12 |
| Elno Family Foundation Inc | 501(c)(3) | 1996 | | $5.7 million | 2025-12 |
| Eos Tech Trust Inc | 501(c)(3) | 2022 | $0 | $0 | 2025-12 |
| Eshel Street Foundation | 501(c)(3) | 2016 | | $14 million | 2024-12 |
| Eya Foundation Inc | 501(c)(3) | 2012 | | $694,153 | 2024-12 |
| Ferguson Foundation Trust | 501(c)(3) | 2007 | | $1.4 million | 2025-10 |
| Fickes Family Foundation Inc | 501(c)(3) | 1995 | | $55,756 | 2024-12 |
| Foundation To Change Gun Laws in America Inc | 501(c)(3) | 2018 | $0 | $0 | 2025-12 |
| Friends of Wil Inc | 501(c)(3) | 2026 | | | |
| Garcia Family Spotlight Foundation Inc | 501(c)(3) | 2015 | | $2.9 million | 2024-12 |
| Gasf Philanthropic Foundation Inc | 501(c)(3) | 2024 | | $2.9 million | 2025-12 |
| George and Polla Abed Family Foundation | 501(c)(3) | 2020 | | $53,737 | 2024-12 |
| Goodman Cares Inc | 501(c)(3) | 2019 | $0 | $0 | 2024-12 |
| Greenhills Pickett Place Community Foundation | 501(c)(3) | 2017 | | $1,609 | 2024-12 |
| Gto Foundation | 501(c)(3) | 2007 | | $1.2 million | 2024-12 |
| Hansan Family Foundation Inc | 501(c)(3) | 2005 | | $726,110 | 2025-12 |
| Hanson Family Foundation | 501(c)(3) | 2016 | | $4.5 million | 2025-12 |
| Harold & Sylvia Greenberg Family Foundation Inc | 501(c)(3) | 2002 | | $91,067 | 2025-12 |
| Health and Reentry Project | 501(c)(3) | 2025 | $0 | $0 | 2024-12 |
| Helpi | 501(c)(3) | 2018 | | $424 | 2024-12 |
| Henry B and Jessie W Keiser Foundation Inc | 501(c)(3) | 1999 | | $2.1 million | 2025-10 |
| Hiralal Agarwal Foundation Inc | 501(c)(3) | 2008 | | $998,961 | 2025-12 |
| Holaday Family Foundation Inc | 501(c)(3) | 2002 | | $323,685 | 2024-12 |
| Imb Foundation | 501(c)(3) | 2024 | | $2.1 million | 2024-12 |
| Irving and Bernice Levine Charitable Foundation | 501(c)(3) | 2022 | | $7.8 million | 2025-12 |
| Izzo Family Foundation | 501(c)(3) | 2008 | | $6.1 million | 2026-06 |
| J Willard and Alice S Marriott Foundation | 501(c)(3) | 1966 | | $442.5 million | 2025-12 |
| Jewell Foundation Limited | 501(c)(3) | 2002 | | $2.2 million | 2025-12 |
| Jim and Carol Trawick Founation Inc | 501(c)(3) | 2007 | | $252,624 | 2024-12 |
| John C Goldsmith and Nancy L Goldsmith Family Foundation | 501(c)(3) | 2009 | | $2.6 million | 2025-12 |
| John Stephen Goodson Memorial Foundation Inc | 501(c)(3) | 2000 | | $180,044 | 2025-12 |
| John Wall Family Foundation Inc | 501(c)(3) | 2015 | | $58,229 | 2025-12 |
| John and Elizabeth Lane Foundation | 501(c)(3) | 1999 | | $1.6 million | 2025-12 |
| Justice Fund Inc | 501(c)(3) | 2002 | | $90,579 | 2024-12 |
| Kahn-Sovel-Mertz Fund | 501(c)(3) | 2001 | | $642,948 | 2025-12 |
| Kelsie Kimberlin Foundation | 501(c)(3) | 2023 | $0 | $0 | 2025-12 |
| Kenneth & Rhoda Foundation Inc | 501(c)(3) | 1998 | | $65 | 2024-12 |
| Koll Family Foundation | 501(c)(3) | 1999 | | $527,409 | 2025-12 |
| Kristina and William Catto Foundation Inc | 501(c)(3) | 2015 | | $25.8 million | 2024-12 |
| Lavin Family Foundation Inc | 501(c)(3) | 2001 | | $1.6 million | 2025-12 |
| Lepere Family Foundation Inc | 501(c)(3) | 2001 | | $58,431 | 2025-12 |
| Leslie & Samuel Kaplan Family Foundation | 501(c)(3) | 2012 | | $3.4 million | 2024-12 |
| Lockheed Martin Corporation FNDN | 501(c)(3) | 1958 | | $10,800 | 2024-12 |
| Mackler-Goding Foundation | 501(c)(3) | 2020 | | $809,546 | 2024-12 |
| Marriott Daughters Foundation | 501(c)(3) | 2011 | | $77.9 million | 2025-08 |
| Meyer and Deanne Sharlin Foundation | 501(c)(3) | 2024 | | $3 million | 2025-12 |
| Murry and Florence Schott Charitable Foundation Inc | 501(c)(3) | 1997 | | $638,715 | 2024-12 |
| Naomi and Nehemiah Cohen Foundation Virginia Corporation | 501(c)(3) | 2004 | | $95.6 million | 2024-12 |
| National Charity League Bethesda MD Chapter Inc | 501(c)(3) | 2025 | $0 | $0 | 2025-05 |
| Neilom Foundation Inc | 501(c)(3) | 2014 | | $1.3 million | 2024-12 |
| Nih Recreation & Welfare Foundation Inc | 501(c)(3) | 2025 | $0 | $0 | 2025-06 |
| Nulsen Family Foundation Inc | 501(c)(3) | 2004 | | $735,241 | 2024-12 |
| Nurmi Family Foundation | 501(c)(3) | 2002 | | $1.5 million | 2025-12 |
| Nurul Chowdhury Family Foundation I NC | 501(c)(3) | 2026 | | $1 | 2025-12 |
| Paul and Carol Horvitz Foundation | 501(c)(3) | 1999 | | $65,914 | 2026-05 |
| Pow Investigative Project Inc | 501(c)(3) | 2020 | | $862 | 2024-12 |
| Prasad Jain Fam Foundation | 501(c)(3) | 2010 | | $275,469 | 2025-12 |
| Rabbitt Whalen Family Foundation Inc | 501(c)(3) | 2019 | | $3.8 million | 2025-12 |
| Rast Foundation | 501(c)(3) | 2017 | | $107.3 million | 2025-09 |
| Reba A Will Foundation | 501(c)(3) | 2018 | | $1.3 million | 2026-03 |
| Rfi Family Foundation Inc | 501(c)(3) | 2002 | | $3.9 million | 2025-12 |
| Richard E and Nancy P Marriott Foundation Inc | 501(c)(3) | 1996 | | $68.3 million | 2025-12 |
| Robert J and Michelle A Stevens Foundation | 501(c)(3) | 2025 | | $3.4 million | 2025-06 |
| Robert M Minkoff Foundation LTD | 501(c)(3) | 2011 | | $7,031 | 2024-12 |
| Robert and Mimi Schwartz Foundation Inc | 501(c)(3) | 2020 | | $556,844 | 2025-12 |
| Robert and Susan Rosenbaum Foundation Inc | 501(c)(3) | 2016 | | $536,300 | 2025-12 |
| Ronald S Haft Foundation | 501(c)(3) | 2006 | | $373,555 | 2025-12 |
| Rowny Foundation | 501(c)(3) | 1999 | | $618,400 | 2024-12 |
| Ryuji Ueno Foundation Inc | 501(c)(3) | 2015 | | $107.3 million | 2024-12 |
| Saint George Philoptochos Society Bethesda MD Inc | 501(c)(3) | 2018 | $0 | $0 | 2025-12 |
| Sally M and Stephen A Herman Foundation Inc | 501(c)(3) | 2005 | | $132,018 | 2025-12 |
| Sami and Annie Totah Family Foundation | 501(c)(3) | 1998 | | $3.6 million | 2024-12 |
| Sanders Foundation | 501(c)(3) | 2001 | | $5.4 million | 2025-10 |
| Schuble Family Foundation Inc | 501(c)(3) | 1998 | | $377,889 | 2025-06 |
| Shugar Foundation Inc | 501(c)(3) | 2026 | | $1 | 2024-12 |
| Sonnie Foundation | 501(c)(3) | 2018 | | $898,276 | 2025-12 |
| Stone Soup Foundation Inc | 501(c)(3) | 2009 | | $1.3 million | 2025-12 |
| Stuart and Laura Plank Family Foundation Inc | 501(c)(3) | 2017 | | $4.3 million | 2025-12 |
| Sylvia and Rip Williams Charitable Foundation Inc | 501(c)(3) | 2003 | | $3.2 million | 2025-06 |
| The Alper Family Foundation Inc | 501(c)(3) | 1995 | | $3 million | 2025-12 |
| The Doreen L Brown Family Charitable Foundation | 501(c)(3) | 1995 | | $105,976 | 2024-12 |
| The Fischer Family Foundation Inc | 501(c)(3) | 2000 | | $17,515 | 2025-12 |
| The George L Shields Foundation Inc | 501(c)(3) | 1995 | | $25 million | 2024-12 |
| The Jon Cohen Memorial Fund | 501(c)(3) | 2011 | $0 | $0 | 2023-09 |
| The Julius and Dorothy Lazarus Foundation Inc | 501(c)(3) | 1995 | | $2.5 million | 2025-09 |
| The Keith Campbell Foundation for the Environment Inc | 501(c)(3) | 2000 | | $420.2 million | 2024-12 |
| The Nancy Peery Marriott Foundation Inc | 501(c)(3) | 1996 | | $23.3 million | 2026-03 |
| The Newburger-Schwartz Family Foundation | 501(c)(3) | 2007 | | $4.3 million | 2025-12 |
| The Otto Whalley Family Foundation Inc | 501(c)(3) | 2000 | | $71,931 | 2025-12 |
| The Sandra and Gilbert@oken Foundation | 501(c)(3) | 2016 | | $2 million | 2025-12 |
| The@moses Feldman Family Foundation | 501(c)(3) | 2005 | | $59 million | 2024-12 |
| Tom and Susan Scholl Family Foundation | 501(c)(3) | 2001 | | $237,359 | 2025-06 |
| Vasal & Farideh Family Foundation Inc | 501(c)(3) | 2021 | | $3,098 | 2025-12 |
| Veverka Family Foundation Inc | 501(c)(3) | 2005 | | $1.5 million | 2025-12 |
| Victoria Casey and Peter Teeley Foundation Inc | 501(c)(3) | 2004 | | $58,075 | 2025-12 |
| Viragh Family Foundation Inc | 501(c)(3) | 2001 | | $39 million | 2025-06 |
| Vitreus Foundation | 501(c)(3) | 1997 | | $436,485 | 2025-12 |
| Walter Reed Foundation Inc | 501(c)(3) | 2016 | $0 | $0 | 2024-12 |
| William M Lane Foundation | 501(c)(3) | 1997 | | $222,391 | 2025-12 |
| William and Karin Banks Foundation Inc | 501(c)(3) | 2003 | | $7.1 million | 2025-12 |
| Winifred Cullen Teeley Foundation Inc | 501(c)(3) | 2001 | | $118,670 | 2025-12 |
| Wobniar Foundation Inc | 501(c)(3) | 2009 | | $447,482 | 2024-12 |
| World Identity Network Foundation | 501(c)(3) | 2020 | | $6,575 | 2024-12 |
| Zaidan Foundation for the Promotion of Intercultural Underst | 501(c)(3) | 2009 | | $5,715 | 2025-12 |