| 1 | AARP | WASHINGTON | $11.0B | $13.1B | Civil Rights, Social Action & Advocacy |
| 2 | AMERICAN NATIONAL RED CROSS | WASHINGTON | $3.8B | $4.6B | Human Services |
| 3 | FINANCIAL INDUSTRY REGULATORY AUTHORITY INC | WASHINGTON | $2.6B | $3.1B | Unclassified |
| 4 | GAVI ALLIANCE | WASHINGTON | $2.5B | $9.5B | International, Foreign Affairs & National Security |
| 5 | GEORGETOWN UNIVERSITY | WASHINGTON | $2.1B | $6.0B | Education |
| 6 | SMITHSONIAN INSTITUTE | WASHINGTON | $2.0B | $7.6B | Arts, Culture & Humanities |
| 7 | CHILDRENS HOSPITAL | WASHINGTON | $1.7B | $2.3B | Health Care |
| 8 | HOWARD UNIVERSITY | WASHINGTON | $1.4B | $2.7B | Education |
| 9 | AMERICAN UNIVERSITY | WASHINGTON | $937.1M | $2.5B | Education |
| 10 | AMERICAN CHEMICAL SOCIETY | WASHINGTON | $819.1M | $2.2B | Science & Technology |
| 11 | PAYPAL CHARITABLE GIVING FUND | WASHINGTON | $813.4M | $106.3M | Philanthropy, Voluntarism & Grantmaking Foundations |
| 12 | AMERICAN FOREIGN SERVICE PROTECTIVE ASSOCIATION | WASHINGTON | $687.3M | $183.6M | Unclassified |
| 13 | NEW VENTURE FUND | WASHINGTON | $662.4M | $624.9M | Environment |
| 14 | CORPORATION FOR PUBLIC BROADCASTING | WASHINGTON | $640.1M | $398.9M | Arts, Culture & Humanities |
| 15 | SECURITIES INVESTOR PROTECTION CORPORATION | WASHINGTON | $625.3M | $5.1B | Unclassified |
| 16 | FIAT LUX RISK AND INSURANCE COMPANY | WASHINGTON | $621.3M | $2.0B | Mutual & Membership Benefit |
| 17 | FUTURE FORWARD USA ACTION | WASHINGTON | $615.3M | $26.7M | Public & Societal Benefit |
| 18 | LEGAL SERVICES CORPORATION | WASHINGTON | $577.1M | $190.7M | Crime & Legal-Related |
| 19 | UNITED MINE WORKERS OF AMERICA 1993 BENEFIT PLAN AND TRUST | WASHINGTON | $541.6M | $216.1M | Unclassified |
| 20 | PHARMACEUTICAL RESEARCH AND MANUFACTURERS OF AMERICA | WASHINGTON | $521.3M | $349.0M | Unclassified |
| 21 | NATIONAL FISH AND WILDLIFE FOUNDATION | WASHINGTON | $513.2M | $3.1B | Animal-Related |
| 22 | ABAX VENTURES INC | WASHINGTON | $482.1M | $960.0M | Public & Societal Benefit |
| 23 | THE ASPEN INSTITUTE INC | WASHINGTON | $443.8M | $756.6M | Social Science |
| 24 | PEW CHARITABLE TRUSTS | WASHINGTON | $408.9M | $1.4B | Philanthropy, Voluntarism & Grantmaking Foundations |
| 25 | CATHOLIC UNIVERSITY OF AMERICA | WASHINGTON | $408.7M | $897.0M | Education |
| 26 | NATIONAL EDUCATION ASSOCIATION OF THE UNITED STATES | WASHINGTON | $402.8M | $443.0M | Unclassified |
| 27 | AMALGAMATED CHARITABLE FOUNDATION INC | WASHINGTON | $396.9M | $361.1M | Philanthropy, Voluntarism & Grantmaking Foundations |
| 28 | MEDICAL FACULTY ASSOCIATES INC | WASHINGTON | $389.5M | $264.9M | Health Care |
| 29 | WORLD WILDLIFE FUND INC | WASHINGTON | $374.8M | $783.9M | Environment |
| 30 | NATIONAL ACADEMY OF SCIENCES | WASHINGTON | $361.7M | $1.6B | Science & Technology |
| 31 | NATIONAL ENDOWMENT FOR DEMOCRACY | WASHINGTON | $356.2M | $106.5M | Public & Societal Benefit |
| 32 | LABORERS-EMPLOYERS BENEFIT PLAN COLLECTION TRUST | WASHINGTON | $348.5M | $2.1M | Unclassified |
| 33 | WORLD CENTRAL KITCHEN INCORPORATED | WASHINGTON | $327.8M | $221.6M | International, Foreign Affairs & National Security |
| 34 | NATIONAL PUBLIC RADIO INC | WASHINGTON | $325.2M | $407.6M | Arts, Culture & Humanities |
| 35 | WINDWARD FUND | WASHINGTON | $308.2M | $432.7M | Environment |
| 36 | JOHN F KENNEDY CENTER FOR THE PERFORMING ARTS | WASHINGTON | $306.9M | $691.4M | Arts, Culture & Humanities |
| 37 | POPULATION SERVICES INTERNATIONAL | WASHINGTON | $306.3M | $257.6M | Unclassified |
| 38 | ASSOCIATION OF AMERICAN MEDICAL COLLEGES | WASHINGTON | $303.7M | $668.6M | Education |
| 39 | INTERNATIONAL CITY MANAGEMENT ASSOCIATION RETIREMENT CORPORATION | WASHINGTON | $290.1M | $704.3M | Mutual & Membership Benefit |
| 40 | SIXTEEN THIRTY FUND | WASHINGTON | $282.2M | $106.5M | Environment |
| 41 | NATIONAL PARK FOUNDATION | WASHINGTON | $275.1M | $560.6M | Unclassified |
| 42 | WORLD RESOURCES INSTITUTE | WASHINGTON | $267.4M | $630.3M | International, Foreign Affairs & National Security |
| 43 | UNITED FOOD AND COMMERCIAL WORKERS INTERNATIONAL UNION | WASHINGTON | $261.8M | $677.3M | Employment |
| 44 | AMERICAN PETROLEUM INSTITUTE | WASHINGTON | $252.3M | $109.9M | Unclassified |
| 45 | UNITED NEGRO COLLEGE FUND INC | WASHINGTON | $250.9M | $917.0M | Education |
| 46 | INTERNATIONAL BACCALAUREATE ORGANIZATION | WASHINGTON | $250.3M | $446.0M | Education |
| 47 | SERVICE EMPLOYEES INTERNATIONAL UNION | WASHINGTON | $247.0M | $427.6M | Unclassified |
| 48 | KIPP DC PUBLIC CHARTER SCHOOLS | WASHINGTON | $243.0M | $493.8M | Education |
| 49 | SOUTHEASTERN UNIVERSITIES RESEARCH ASSOCIATION INC | WASHINGTON | $242.1M | $56.9M | Science & Technology |
| 50 | GALLAUDET UNIVERSITY | WASHINGTON | $235.0M | $550.0M | Education |