| 1 | Abax Ventures INC Washington | $1.1B | $482.1M | $960.0M |
| 2 | Future Forward USA Action Washington | $624.6M | $615.3M | $26.7M |
| 3 | National Endowment for Democracy Washington | $356.2M | $356.2M | $106.5M |
| 4 | Judicial Watch INC Washington | $205.0M | $127.7M | $502.9M |
| 5 | Consortium for Elections and Political Process Strengthening Washington | $177.7M | $177.7M | $6.4M |
| 6 | Heritage Foundation Washington | $147.0M | $133.9M | $413.8M |
| 7 | Conference of State Bank Supervisors INC Washington | $97.6M | $97.6M | $242.5M |
| 8 | Center on Budget and Policy Priorities Washington | $77.9M | $52.5M | $172.0M |
| 9 | Ab Foundation Washington | $74.6M | $74.6M | $3.0M |
| 10 | Cato Institute Washington | $67.5M | $62.8M | $190.5M |
| 11 | Metropolitan Washington Council of Governments Washington | $55.2M | $55.2M | $65.8M |
| 12 | North Fund Washington | $45.0M | $45.0M | $50.5M |
| 13 | Global Impact Social Welfare Foundation Washington | $43.6M | $43.6M | $24.2M |
| 14 | Center for Popular Democracy Washington | $41.8M | $40.9M | $42.4M |
| 15 | Bipartisan Policy Center INC Washington | $38.0M | $37.8M | $62.8M |
| 16 | Institute for Free Speech Washington | $33.9M | $3.7M | $9.0M |
| 17 | Leadership Conference Education Fund INC Washington | $29.1M | $13.3M | $50.9M |
| 18 | Center for the Study of Services Washington | $28.3M | $28.3M | $19.3M |
| 19 | Durable Capital for Sustainable Outcomes INC Washington | $27.5M | $27.5M | $25.4M |
| 20 | Democracy Fund Voice INC Washington | $26.4M | $13.3M | $16.4M |
| 21 | Common Cause Education Fund Washington | $25.2M | $25.1M | $31.3M |
| 22 | Center for American Progress Action Fund Washington | $22.4M | $22.4M | $13.8M |
| 23 | Future Now Action Washington | $19.5M | $19.5M | $10.3M |
| 24 | Pulitzer Center on Crisis Reporting Washington | $17.5M | $17.5M | $47.4M |
| 25 | Commercial Vehicle Safety Alliance Washington | $17.3M | $14.1M | $10.9M |
| 26 | Union Station Redevelopment Corp. Washington | $15.6M | $15.0M | $159.5M |
| 27 | National Academy of Public Administration Washington | $15.3M | $7.8M | $16.3M |
| 28 | Issue One Washington | $14.8M | $14.8M | $12.0M |
| 29 | America250 Org INC Washington | $14.5M | $14.5M | $5.0M |
| 30 | Defi Education Fund Washington | $13.3M | $6.9M | $18.5M |
| 31 | Citizens for Responsibility and Ethics in Washington INC Washington | $12.4M | $11.2M | $13.4M |
| 32 | Oil Change International Washington | $11.6M | $11.5M | $11.0M |
| 33 | Center Action Now Washington | $11.1M | $11.1M | $11.6M |
| 34 | Caring for Military Families the Elizabeth Dole Foundation Washington | $11.0M | $8.2M | $14.3M |
| 35 | Reset Tech Washington | $11.0M | $11.0M | $2.6M |
| 36 | Institute for War & Peace Reporting US Washington | $10.8M | $10.8M | $2.4M |
| 37 | Center for the Study of Social Policy Washington | $10.6M | $8.4M | $20.5M |
| 38 | Consumer Federation of America INC Washington | $10.2M | $9.3M | $9.3M |
| 39 | Center for Study of Responsive Law Washington | $10.0M | $2.6M | $27.5M |
| 40 | The Niskanen Center INC Washington | $10.0M | $10.0M | $12.0M |
| 41 | Committee for a Responsible Federal Budget Washington | $9.8M | $9.8M | $10.2M |
| 42 | National Association of Attorneys General Mission Foundation INC Washington | $9.8M | $4.6M | $111.4M |
| 43 | Ethics and Public Policy Center INC Washington | $9.7M | $8.4M | $11.8M |
| 44 | Earthworks Washington | $9.6M | $9.6M | $10.9M |
| 45 | Fund for Constitutional Government Washington | $9.4M | $6.5M | $9.8M |
| 46 | Association of Maternal and Child Health Programs Washington | $8.7M | $8.1M | $3.0M |
| 47 | The Project on Government Oversight INC Washington | $8.5M | $8.5M | $13.2M |
| 48 | American Policy Ventures Foundation Washington | $8.4M | $8.4M | $7.4M |
| 49 | Club for Growth Washington | $8.2M | $6.2M | $13.6M |
| 50 | Centre for Public Impact North America INC Washington | $7.9M | $7.9M | $6.7M |