| AARP | Washington | $10,969,160,920 |
| American National Red Cross | Washington | $3,916,983,933 |
| Gavi Alliance | Washington | $2,547,417,284 |
| Georgetown University | Washington | $2,296,035,338 |
| National Association of Letter Carriers | Washington | $2,203,167,533 |
| Smithsonian Institute | Washington | $1,911,142,906 |
| Childrens Hospital | Washington | $1,872,813,787 |
| Howard University | Washington | $1,433,002,000 |
| American University | Washington | $929,602,491 |
| Fiat Lux Risk and Insurance Company | Washington | $842,304,486 |
| American Foreign Service Protective Association | Washington | $827,100,176 |
| American Chemical Society | Washington | $819,099,460 |
| Paypal Charitable Giving Fund | Washington | $813,412,937 |
| New Venture Fund | Washington | $662,364,100 |
| National Fish and Wildlife Foundation | Washington | $584,225,222 |
| Legal Services Corporation | Washington | $572,829,932 |
| United Mine Workers of America 1993 Benefit Plan and Trust | Washington | $541,575,011 |
| Pharmaceutical Research and Manufacturers of America | Washington | $521,348,217 |
| John F Kennedy Center for the Performing Arts | Washington | $516,578,163 |
| Association of Universities for | Washington | $468,809,827 |
| Pew Charitable Trusts | Washington | $467,971,224 |
| The Aspen Institute Inc | Washington | $443,841,184 |
| Catholic University of America | Washington | $425,408,328 |
| Medical Faculty Associates Inc | Washington | $418,593,481 |
| National Education Association of the United States | Washington | $408,913,922 |
| Assets Under Movement | Washington | $396,906,311 |
| World Wildlife Fund Inc | Washington | $366,655,209 |
| National Academy of Sciences | Washington | $361,712,009 |
| Blood Cancer United Inc | Washington | $358,698,504 |
| National Public Radio Inc | Washington | $354,056,068 |
| Association of American Medical Colleges | Washington | $353,956,949 |
| National Geographic Society | Washington | $340,516,012 |
| World Central Kitchen Incorporated | Washington | $327,840,221 |
| Windward Fund | Washington | $308,245,754 |
| Population Services International | Washington | $306,308,594 |
| National Endowment for Democracy | Washington | $298,045,011 |
| Global Impact | Washington | $290,357,767 |
| International City Management Association Retirement Corporation | Washington | $290,077,681 |
| Sixteen Thirty Fund | Washington | $282,241,759 |
| Service Employees International Union | Washington | $280,796,391 |
| International Baccalaureate Organization | Washington | $270,523,757 |
| KIPP DC Public Charter Schools | Washington | $263,067,055 |
| United Food and Commercial Workers International Union | Washington | $261,789,459 |
| American Petroleum Institute | Washington | $252,327,496 |
| Southeastern Universities Research Association Inc | Washington | $251,855,977 |
| Gallaudet University | Washington | $237,007,252 |
| Patient Access Network Foundation | Washington | $230,809,794 |
| International Brotherhood of Electrical Workers | Washington | $227,767,132 |
| International Brotherhood of Electrical Workers | Washington | $224,103,539 |
| International Brotherhood of Teamsters | Washington | $223,777,901 |
| American Federation of Teachers | Washington | $220,419,251 |
| Humane World for Animals Inc | Washington | $216,548,337 |
| World Resources Institute | Washington | $213,044,770 |
| Health Services for Children with Special Needs Inc | Washington | $212,082,533 |
| Hopewell Fund | Washington | $208,022,501 |
| Forgood Inc | Washington | $204,438,959 |
| AARP Foundation | Washington | $202,932,133 |
| United States Holocaust Memorial Council | Washington | $198,748,025 |
| American Federation of State County & Municipal Employees | Washington | $190,261,936 |
| Special Olympics Inc | Washington | $186,403,463 |
| American Chemistry Council | Washington | $186,085,032 |
| Dkt International Inc | Washington | $182,329,221 |
| Childrens National | Washington | $180,151,111 |
| Neighborhood Reinvestment Corp | Washington | $179,198,962 |
| America Votes | Washington | $176,324,072 |
| American Near East Refugee Aid Inc | Washington | $176,317,328 |
| American Bankers Association | Washington | $176,137,760 |
| National Park Foundation | Washington | $173,752,964 |
| Greater Washington Urban League Inc | Washington | $170,236,163 |
| Unity Health Care Inc | Washington | $166,823,735 |
| Acdi Voca | Washington | $162,518,399 |
| League of Conservation Voters Inc | Washington | $159,276,886 |
| United Negro College Fund Inc | Washington | $158,921,384 |
| Friendship Public Charter School | Washington | $157,367,056 |
| Project Hope - the People-to-People Health Foundation Inc | Washington | $157,270,945 |
| Communications Workers of America AFL-CIO Clc | Washington | $147,710,670 |
| International Research and Exchanges Board Inc | Washington | $146,620,152 |
| American Psychological Association | Washington | $146,276,253 |
| Community Partnership for the Prevention of Homelessness | Washington | $146,271,915 |
| American Association of State Highway & Transportation Officials | Washington | $143,754,574 |
| Elizabeth Glaser Pediatric AIDS Foundation | Washington | $138,028,470 |
| Laborers International Union of North America | Washington | $134,249,926 |
| Heritage Foundation | Washington | $133,868,147 |
| Board of Trustees of National Iam B Enefit Trust Fund | Washington | $131,381,870 |
| American Federation of Labor & Congress of Industrial Orgs | Washington | $131,132,409 |
| Friends of the World Food Program Inc | Washington | $129,769,960 |
| Urban Institute | Washington | $129,592,450 |
| American Association for the Advancement of Science | Washington | $129,476,881 |
| Rfe-Rl Inc | Washington | $128,982,013 |
| Capital Area Food Bank | Washington | $128,312,843 |
| International Food Policy Research Institute | Washington | $126,007,116 |
| American College of Cardiology Foundation | Washington | $125,831,256 |
| Greater Washington Community Foundation | Washington | $123,242,853 |
| American Israel Public Affairs Committee | Washington | $122,539,124 |
| Childrens Hospital Foundation | Washington | $117,997,955 |
| Biotechnology Innovation Organization | Washington | $117,748,708 |
| National Restaurant Association | Washington | $116,506,047 |
| Thurgood Marshall College Fund Inc | Washington | $116,286,465 |
| Brookings Institution | Washington | $115,659,701 |
| Pan American Development Foundation Inc | Washington | $113,531,319 |
| American Society of Hematology Inc | Washington | $112,402,449 |
| North American Electric Reliability Corp | Washington | $112,373,473 |
| American Councils for International Education Actr Accels Inc | Washington | $111,646,743 |
| National Committee for Quality Assurance | Washington | $111,482,047 |
| Childrens Research Institute | Washington | $109,384,265 |
| International Union of Operating Engineers | Washington | $107,444,684 |
| National Democratic Institute for International Affairs | Washington | $107,205,654 |
| Confederation of Indian Industry | Washington | $106,754,696 |
| Aga Khan Foundation USA | Washington | $106,705,948 |
| Carnegie Institution of Washington | Washington | $106,544,070 |
| Pact Inc | Washington | $106,219,062 |
| Pathfinder International | Washington | $104,896,435 |
| National Trust for Historic Preservation in the United States | Washington | $104,875,831 |
| American Beverage Association | Washington | $103,751,062 |
| Judicial Watch Inc | Washington | $102,272,691 |
| Edison Electric Institute | Washington | $101,821,254 |
| International Association of Sheet Metal Air Rail and Transportation | Washington | $100,258,317 |
| Marys Center for Maternal and Child Care Inc | Washington | $98,876,368 |
| Morris and Gwendolyn Cafritz Foundation | Washington | $98,144,895 |
| Conference of State Bank Supervisors Inc | Washington | $97,592,138 |
| 50can Inc | Washington | $97,340,773 |
| United States Association for Unhcr | Washington | $95,683,592 |
| National Retail Federation Inc | Washington | $93,415,296 |
| Urban Land Institute | Washington | $92,328,399 |
| Society for Science and the Public | Washington | $91,128,420 |
| Globalgiving Foundation Inc | Washington | $91,098,723 |
| National Association of Home Builders of the United States | Washington | $90,020,827 |
| Share Our Strength | Washington | $89,894,889 |
| National Council for Behavioral Health | Washington | $89,150,336 |
| United Mine Workers of America 1992 Benefit Fund | Washington | $87,818,567 |
| Trinity College | Washington | $85,811,448 |
| Bricklayers and Allied Craftworkers International Health Fund | Washington | $85,152,927 |
| Paralyzed Veterans of America | Washington | $83,222,092 |
| Davis Memorial Goodwill Industries | Washington | $81,289,662 |
| D C Preparatory Academy | Washington | $80,682,027 |
| American Federation of Government Employees | Washington | $80,190,584 |
| American Center for International Labor Solidarity | Washington | $79,068,286 |
| Kind Inc | Washington | $78,971,038 |
| American Council of Life Insurers Inc | Washington | $77,275,837 |
| Paintcare Inc | Washington | $77,136,896 |
| First Book | Washington | $77,064,962 |
| United Nations Foundation Inc | Washington | $77,013,346 |
| American Enterprise Institute for Public Policy Research | Washington | $75,372,309 |
| League of Conservation Voters Education Fund | Washington | $75,210,318 |
| Hillel the Foundation for Jewish Campus Life | Washington | $72,798,273 |
| Electronic Payments Coalition Inc | Washington | $72,764,438 |
| International Republican Institute | Washington | $72,208,196 |
| Campaign for Tobacco-Free Kids | Washington | $71,866,182 |
| National Association of Broadcasters | Washington | $71,545,822 |
| Cnfa | Washington | $70,211,705 |
| Association of American Railroads | Washington | $70,167,327 |
| Atlantic Council of the U S Inc | Washington | $69,901,633 |
| Freedom House Inc | Washington | $69,437,963 |
| Georgetown Day School Inc | Washington | $69,228,370 |
| Cato Institute | Washington | $69,195,897 |
| Radio Free Asia | Washington | $68,856,688 |
| Ncta-the Internet & Television Association | Washington | $67,546,226 |
| American Clean Power Association | Washington | $67,498,049 |
| Hudson Institute Inc | Washington | $67,049,361 |
| Digital Promise Global | Washington | $66,817,083 |
| Zero to Three - National Center for Infants Toddlers and Families | Washington | $66,369,306 |
| American Postal Workers Union | Washington | $66,028,774 |
| Delta Sigma Theta Sorority Inc | Washington | $65,778,456 |
| Business Roundtable Inc | Washington | $65,592,297 |
| Escuela Agricola Panamericana | Washington | $65,183,803 |
| National Association of Childrens Hospital and Related Institutions | Washington | $64,966,463 |
| International Association Pension Plan | Washington | $64,534,708 |
| Municipal Securities Rulemaking Board | Washington | $64,107,674 |
| American College of Obstetricians and Gynecologists | Washington | $63,505,977 |
| National Association of Manufacturers of the USA | Washington | $63,503,311 |
| Whitman-Walker Clinic Inc | Washington | $62,406,560 |
| National Association of County and City Health Officials | Washington | $62,267,559 |
| SEIU Health and Welfare Fund | Washington | $61,969,785 |
| Optical Society of America Inc | Washington | $61,827,324 |
| Mortgage Bankers Association of America | Washington | $61,785,785 |
| Sams Foundation | Washington | $61,395,982 |
| American Israel Education Foundation Inc | Washington | $61,115,404 |
| Nuclear Energy Institute Inc | Washington | $59,363,463 |
| American Psychiatric Association | Washington | $58,199,477 |
| American Battlefield Tr | Washington | $57,852,076 |
| Carnegie Endowment for International Peace | Washington | $57,574,887 |
| Community of Hope Inc | Washington | $57,568,524 |
| American Geophysical Union | Washington | $56,165,227 |
| International Union of Bricklayers and Allied Craftworkers | Washington | $55,512,808 |
| Protect Democracy Project | Washington | $55,482,925 |
| Washington International School | Washington | $55,108,640 |
| African Parks Foundation of America | Washington | $54,916,477 |
| Advanced Medical Technology Association | Washington | $54,776,637 |
| Guaranty Association Benefits Company | Washington | $54,747,905 |
| Metropolitan Washington Council of Governments | Washington DC | $54,378,155 |
| Pharmaceutical Care Management Association | Washington | $54,188,107 |
| International Foundation for Electoral Systems | Washington | $54,102,511 |
| Washington Housing Conservancy Inc | Washington | $53,565,264 |
| Unidosus | Washington | $53,467,392 |
| Truth Initiative Foundation | Washington | $52,987,573 |
| Innovations for Poverty Action | Washington | $52,795,464 |
| Catholic Charities of the Archdiocese of Washington Inc | Washington | $52,746,894 |
| Center on Budget and Policy Priorities | Washington | $52,523,656 |
| Kyiv School of Economics | Washington | $51,734,819 |
| American Fuel and Petrochemical Manufacturers | Washington | $51,664,143 |
| National Parks Conservation Association | Washington | $51,618,326 |
| American Society for Microbiology | Washington | $51,295,584 |
| American Health Care Association and Subsidiary | Washington | $51,147,803 |
| Universities Space Research Association | Washington | $50,543,825 |
| National Marine Manufacturers Association Inc | Washington | $50,353,040 |
| Center for Strategic and International Studies Inc | Washington | $50,281,330 |
| District of Columbia International School | Washington | $50,152,016 |
| Bainum Family Foundation | Washington | $50,008,492 |
| Young Mens Christian Association | Washington | $49,246,047 |
| National Electrical Contractors Association Inc | Washington | $49,095,132 |
| Foundation for Food and Agriculture Research | Washington | $49,062,378 |
| Ocean Conservancy Inc | Washington | $48,811,949 |
| American Farmland Trust | Washington | $48,402,808 |
| Tobacco Free Kids Action Fund | Washington | $48,241,563 |
| American Trucking Associations Inc | Washington DC | $48,109,566 |
| American Embassy School Association | Washington | $47,553,637 |
| National 4-H Council | Washington | $47,459,546 |
| Pew Research Center | Washington | $46,263,769 |
| Freedom Forum Inc | Washington | $46,038,530 |
| National Cable Satellite Corporation | Washington | $46,032,036 |
| Amideast | Washington | $45,934,177 |
| United Mine Workers of America Combined Benefit Fund | Washington | $45,397,165 |
| North Fund | Washington | $45,031,127 |
| Some Inc | Washington | $43,400,634 |
| Wyss Foundation | Washington | $43,385,767 |
| National Business Aviation Association Inc | Washington | $42,994,933 |
| White House Historical Association | Washington | $42,816,496 |
| Finca International Inc | Washington | $42,466,280 |
| American Gas Association | Washington | $42,322,560 |
| US Chamber of Commerce Foundation | Washington | $42,251,033 |
| Maret School Inc | Washington | $41,249,159 |
| The Recycling Partnership Inc | Washington | $41,184,643 |
| American Pharmacists Association | Washington | $40,821,329 |
| Ingleside Presbyterian Retirement Community Inc | Washington | $38,584,313 |
| German Marshall Fund of the US | Washington | $38,434,390 |
| Wilderness Society | Washington | $38,258,071 |
| National Association of Social Workers Inc | Washington | $37,983,463 |
| American Farm Bureau Federation | Washington | $37,897,923 |
| Center for American Progress | Washington | $37,377,429 |
| New America Foundation | Washington | $37,233,867 |
| American Society of Nephrology Inc | Washington | $36,768,596 |
| Society for Neuroscience | Washington | $36,716,820 |
| Laborers National Health and Welfare Fund | Washington | $36,639,894 |
| Evidence Action Inc | Washington | $36,213,681 |
| Med-Project USA | Washington | $35,364,067 |
| Oceana Inc | Washington | $34,668,686 |
| Ltc Reinsurance Pcc | Washington | $34,299,752 |
| American Council on Education | Washington | $34,285,159 |
| National Treasury Employees Union | Washington | $34,168,109 |
| National Society of the Daughters of the American Revolution | Washington | $33,892,825 |
| Education Trust Inc | Washington | $33,239,997 |
| NPR Foundation | Washington | $32,449,175 |
| International Spy Museum | Washington | $31,785,524 |
| Milky Way Research Foundation | Washington | $30,038,500 |
| National Association of Counties | Washington | $28,914,578 |
| Washington Drama Society Inc | Washington | $28,220,542 |
| Phillips Collection | Washington | $26,569,664 |
| United States Letter Carriers Mutual Benefit Association | Washington | $26,077,967 |
| National Womens Law Center | Washington | $24,153,153 |
| Accion International | Washington | $23,763,541 |
| Washington Gas Light Company Union Veba Trust | Washington | $23,561,614 |
| Hillwood Estate Museum & Gardens | Washington | $19,809,810 |
| Global Fishing Watch Inc | Washington | $19,122,848 |
| Jubilee Housing Inc | Washington | $19,093,136 |
| Diane & Norman Bernstein Foundation | Washington | $18,590,901 |
| National Education Association and Affiliate Retiree Health Plan | Washington | $16,308,776 |
| Breakthrough Prize in Life Sciences Foundation | Washington | $14,846,831 |
| Nht Communities | Washington | $14,610,281 |
| Hewlett Packard Enterprise Foundation | Washington | $13,703,084 |
| Public Welfare Foundation Inc | Washington | $13,393,238 |
| National Museum of Women in the Arts Inc | Washington | $13,143,812 |
| Fwd US Inc | Washington | $12,736,177 |
| The Quetzal Trust | Washington | $11,681,450 |
| Wyss Medical Foundation Inc | Washington | $9,973,172 |
| Think of US | Washington | $9,611,567 |
| Carol and Gene Ludwig Family Foundation | Washington | $9,043,128 |
| The Hillside Foundation | Washington | $9,022,036 |
| Wallace Global Fund II | Washington | $8,677,993 |
| Aviv Foundation Inc | Washington | $7,897,932 |
| Norman R Rales and Ruth Rales Foundation | Washington | $7,841,955 |
| Ltc Reinsurance Pcc | Washington | $7,801,774 |
| Eugene & Agnes E Meyer Foundation | Washington | $6,548,862 |
| Student Freedom Initiative Inc | Washington | $6,005,581 |
| Summit Charitable Foundation Inc | Washington | $5,608,063 |
| Telescope Fund | Washington | $5,536,429 |
| Bhp Foundation | Washington | $3,796,445 |
| Democracy Fund Inc | Washington | $2,515,339 |
| Ncrc Community Development Fund Inc | Washington | $2,252,467 |
| Pact Global Microfinance Fund | Washington | $2,178,249 |
| Luminate Foundation Inc | Washington | $2,044,374 |
| Danaher Foundation | Washington | $1,562,504 |
| Ufcw Charity Foundation | Washington | $910,940 |
| Indian Paintbrush Foundation | Washington | -$7,555,983 |