| 1 | Richard and Helen DeVos Foundation / DeVos Urban Leadership Initiative | 2,682 | $626,197,793 |
| 2 | Donors Capital Fund | 2,195 | $399,706,518 |
| 3 | Freedom Partners | 86 | $365,729,650 |
| 4 | Robert W. Wilson Charitable Trust | 197 | $222,587,478 |
| 5 | Charles G. Koch Charitable Foundation | 1,826 | $169,190,003 |
| 6 | DonorsTrust | 4,128 | $161,269,907 |
| 7 | David H. Koch Charitable Foundation | 465 | $116,363,739 |
| 8 | Dick and Betsy DeVos Family Foundation | 2,395 | $89,771,827 |
| 9 | TC4 Trust | 25 | $64,466,380 |
| 10 | Herrick Foundation | 900 | $58,303,473 |
| 11 | John Templeton Foundation | 230 | $51,112,276 |
| 12 | Merck | 13 | $35,416,437 |
| 13 | Ed Uihlein Family Foundation | 520 | $34,626,043 |
| 14 | Americans for Job Security | 6 | $26,205,750 |
| 15 | Center for Consumer Freedom | 13 | $20,064,059 |
| 16 | Wellspring Committee | 48 | $19,099,369 |
| 17 | Stuart Family Foundation | 996 | $18,882,901 |
| 18 | American Legal Foundation | 5 | $15,276,691 |
| 19 | Alliance Defending Freedom | 348 | $14,696,885 |
| 20 | Americans for Responsible Leadership | 9 | $14,515,000 |
| 21 | Employment Policies Institute Foundation | 16 | $14,402,121 |
| 22 | American Future Fund | 16 | $13,698,700 |
| 23 | American Beverage Institute | 9 | $11,448,832 |
| 24 | Dow Chemical Company | 8 | $10,610,585 |
| 25 | Freedom's Watch | 4 | $10,189,513 |
| 26 | Reams Foundation | 157 | $8,368,790 |
| 27 | Evangchr4 Trust | 8 | $7,912,000 |
| 28 | Exelon Corporation | 3 | $7,467,106 |
| 29 | Aetna | 3 | $7,150,000 |
| 30 | American Petroleum Institute | 80 | $6,978,110 |
| 31 | Middle East Forum | 75 | $6,619,474 |
| 32 | Koch Industries PAC | 1,444 | $6,384,700 |
| 33 | TRT Holdings | 8 | $5,866,880 |
| 34 | Orville D. and Ruth A. Merillat Foundation | 78 | $5,374,600 |
| 35 | Free Enterprise America | 9 | $5,197,000 |
| 36 | Retail Industry Leaders Association | 7 | $4,976,898 |
| 37 | Center for Union Facts | 8 | $4,827,389 |
| 38 | Alliance for Freedom | 5 | $4,615,000 |
| 39 | American Natural Gas Alliance | 72 | $4,543,071 |
| 40 | Alliance for School Choice | 16 | $4,023,015 |
| 41 | Family Coalition | 4 | $3,862,251 |
| 42 | Center for Educational Innovation | 52 | $3,839,757 |
| 43 | Knowledge and Progress Fund | 5 | $3,675,000 |
| 44 | Alan and Hope Winters Family Foundation | 290 | $3,543,842 |
| 45 | Oxbow Carbon LLC | 8 | $3,400,000 |
| 46 | Stephen Harold Schimmel Foundation | 53 | $3,249,435 |
| 47 | Judicial Crisis Network | 13 | $3,218,000 |
| 48 | National Council on Teacher Quality | 4 | $3,088,236 |
| 49 | American Action Network | 9 | $2,903,091 |
| 50 | Annual Fund | 6 | $2,809,191 |
